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Real title was, 'Our Broken Economy, in One Simple Chart'.

Despite some of the recent coverage, this chart indicates that gains are not going to the top 20%: they are going to top 1%, and particularly <1%.

To be clear, this is not many programmers: "In 1980, the top 1% of adult earners in the U.S. made $420,000 a year, on average (before taxes and measured in 2014 dollars) — 27 times as much as the average for the bottom 50% of earners. Today the top 1% of earners make an average of $1.3 million a year — 81 times as much as the average for workers in the bottom half."

HBR also found that gains are increasingly going to the top firms: there is a global set of winners and losers. Inequality is growing everywhere, in all fields. https://hbr.org/cover-story/2017/03/corporations-in-the-age-...

I'm not sure we can just blame this on the tiny minority of mega-rich at the top. The whole inversion of the curve is cause for alarm. The chart is great but it seems like everyone's eye is catching on that crazy portion on the far right. Not only do we have to bring that down, we need to grab the line at 5% and start yanking it up. That's probably going to require policies and taxes that not just the 1% but the 20% as well don't like.

EDIT: I'd also like to plug this really great article on regional inequality which is a huge problem but usually goes unmentioned in these sorts of discussions: http://washingtonmonthly.com/magazine/novdec-2015/bloom-and-...

If the inequality is artificial, it might be that an artificial intervention will reverse it. If it's not, than so God help us. A democratically "elected" Robin Hood will probably just take a lot from the rich and give a little to the poor to keep being "elected" democratically.

On another side of life, the moment people have enough to pay the bill, anything more will not make them any happier. Leveling the income or the wealth is not doing anything effective to increasing happiness. What's and where's the problem of inequity? The fact that I can't afford a luxurious yacht trip?

The actual problem is working long hours when you could be working short hours for the same pay, freeing time for both enjoyment, well being and creativity.

Rich can also afford to hire servants and employees to do things for them. They can also afford expensive extra things or medical procedures without getting bankrupted. Capital such as factories, research facilities. Teams to manipulate both common people (marketing) and politicians (lobbyists).

The 20% can be completely left alone while you bring the bottom line up. but the <1% always manage to convince up to the 80% that they will be affected too. this results in what I call the right wing poor people. People that can only benefit from more taxes to the rich and land redistribution, but because they see their palpable earnings as being part of some intangible upper middle class (e.g. poor people that own one home, or programmers making $170k a year in sf) they are against any of that. it's the most effective propaganda war.
Personal opinion: it's also harder to grow or get investment on a startup which competes or might compete with a big corporation in future, just because bigCorp might go into that area as well, or add a "feature" which represents your entire business.

How do you tackle this?

There are several advantages to being a small company. The biggest is you can offer 1-on-1 individualized support. Another big advantage is small companies have less mass and can adapt to customer/market needs quicker.

Jason Cohen has a lot of good advice on the competitive advantage of small companies: https://www.youtube.com/watch?v=1rMPbAN6i7s

So it's all going to Bezos, Soros and Carlos Slim?
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It's an interesting question. Most of peoples incomes are rising, it's just whose incomes are rising more than others. Is that still fair?
Economists don't generally buy the buy idea that you can make some people better off without making others worse off.

In short, if all the gains happen for one group, even if the other group isn't directly losing money, their purchasing power will be eroded by the rich. And I'll add that this sort of thing keeps stacking up, because as the rich continue to be able to buy up things like land at a higher rate than the poor, the rich are then able to extract even more money from the poor through rents.

>Economists don't generally buy the buy idea that you can make some people better off without making others worse off.

Which economists? Economists generally support freer trade, more open borders and the like because they see trade as fundamentally not a zero sum game: if two parties are willing to make an exchange, it must be because the exchange somehow makes them better off than they would be without it. All of developmental economics is built on this: it's why the majority of the world's population enjoy an incredibly greater standard of living than they did 100 years ago. Everyone is better off.

Which is not to say there aren't situations where economists recognise trade-offs. For example, https://en.wikipedia.org/wiki/Factor_price_equalization: a commonly accepted economic theory that proposes that international trade between poorer and richer countries will make unskilled wages in the poorer countries higher and in the richer countries lower.

http://www.oecd.org/social/in-it-together-why-less-inequalit...

"This long-run increase in income inequality not only raises social and political concerns, but also economic ones. It tends to drag down GDP growth, due to the rising distance of the lower 40% from the rest of society. Lower income people have been prevented from realising their human capital potential, which is bad for the economy as a whole."

" Causes and Consequences of Income Inequality: A Global Perspective", from the IMF.

"First, we show why policymakers need to focus on the poor and the middle class. Earlier IMF work has shown that income inequality matters for growth and its sustainability. Our analysis suggests that the income distribution itself matters for growth as well. Specifically, if the income share of the top 20 percent (the rich) increases, then GDP growth actually declines over the medium term, suggesting that the benefits do not trickle down. In contrast, an increase in the income share of the bottom 20 percent (the poor) is associated with higher GDP growth. The poor and the middle class matter the most for growth via a number of interrelated economic, social, and political channels."

Economists familiar with Arthur Pigou. And here I'll point out that there's a difference between economists with a relatively complete grounding in modern economic theory, and the politicians engaged in economic policy.
Personally, I think it is blatantly unfair. It's like if we had a big bad of skittles and every time I took 1 skittle, you took 10 skittles.
More like, if we had a big patch of strawberries and every day I picked 100 and you picked 1000, why should I get to take yours?
Because you're cheating - I saw some Mexicans picking them for you.
Why is that cheating?
Why are the Mexicans picking them for me, not for you or for themselves? Assuming I didn't enslave them, I must be offering them something that makes it worth their while. Maybe I spent some time building better tools for berry picking, so using those tools they can take home more berries overall than they could without my help even if they're giving some to me. Maybe I saved some berries, traded them for supplies with someone else, and built some kind of shelter over the berry bush. Maybe I've got a spear to scare off the men who threaten them when they try to pick berries in Mexico.

I think this is particularly relevant to software developers. It's often fairly easy for us to go into contracting, or start our own business, but many developers with those opportunities (myself included) still choose to work for others. Perhaps we prefer the stability of not having to manage our own business, perhaps we like the projects a particular company is working on and lack the resources to attempt them ourselves, perhaps we want to acquire more savings before starting out on our own, perhaps we want to learn from a particular company. And even when we do start our own businesses, for some reason we still tend to prefer traditional structures over more equal structures like cooperatives, prefer structures in which people work for others.

Maybe.. I can completely change a reasonable answer to any moral problem just by adding another maybe.

But it doesn't really matter. The analogy is flawed, that's the point, because it's not how it works in the real world. In the real world, people are not getting 1000000x higher income just because they do 1000000x more of the same work.

The main problem is in how we value things that are collectively produced (via cooperation of different people, especially in different points in time). There are basically two main solutions to the problem, both of them wrong. One is the neoclassical solution, which is to deny that we cooperate. Then there is Marx's solution, which is labor theory of value.

I don't believe it has a good solution.

>In the real world, people are not getting 1000000x higher income just because they do 1000000x more of the same work.

You could argue that they get 1000x (1000000x is disingenuous; 1000000x the minimum wage is around $15,000,000,000 per year, practically nobody makes that) higher income because they do something that people value 1000x more. If we assume people pay others for doing this they value, if a developer can't find somebody who values what they provide enough to pay them more than $80,000, while a fund manager can find someone to pay them $80,000,000, some people must value what the fund manager is doing a lot more or else they wouldn't pay him/her.

>One is the neoclassical solution, which is to deny that we cooperate.

How does it deny we cooperate? I have an apple and I want an orange, you have an orange and you want an apple, we exchange those things, how is that not cooperation?

> If we assume people pay others for doing this they value

That's a strong assumption and as a matter of fact, they don't. For example, when I go to cinema, I pay to the ticket seller. I don't pay to the people who actually produced the movie. I rely on some (unknown to me) mechanism according to which those people get paid, but I don't pay them.

> How does it deny we cooperate?

So you can see that in the above example. I don't pay individuals for doing things for me that I value. Instead, I pay to some organization which then redistributes the money. Neoclassical solution denies an existence of such organization. (Which is not quite wrong - I have no idea how to define this organization correctly for all edge cases - as I already mentioned, I don't see a solution. But it is also not correct.)

And it gets even worse! Some people cannot be paid for what valuable they are doing for me, because they are already dead. For example, I am not paying to Beethoven. There are even things that produce things of value without any human intervention; who do I pay then?

So yeah, maybe it kinda works for apples and oranges, and picking strawberries, but not in general.

>For example, when I go to cinema, I pay to the ticket seller. I don't pay to the people who actually produced the movie. I rely on some (unknown to me) mechanism according to which those people get paid, but I don't pay them.

The mechanism is the same; it's transitive. You pay the ticket seller, the ticket seller pays the distribution company, the distribution company pays the production company, something along those lines. If we assume nobody's going around stealing or printing money, then that's the only way the people producing the move could be getting money.

If you don't like all those middle-men, that's why things like Kickstarter are appealing to many people. I wanted the people who made Planescape Torment, one of my favourite games, to make a sequel. I paid them in advance directly, via Kickstarter, as did many others. They made an excellent (at least in my view) game.

>And it gets even worse! Some people cannot be paid for what valuable they are doing for me, because they are already dead. For example, I am not paying to Beethoven. There are even things that produce things of value without any human intervention; who do I pay then?

Payment motivates somebody to give up something and give it to you. If something can be taken without depriving anybody of it, why is payment needed? Some people oppose intellectual property laws for this reason, because unlike physical property, using intellectual property doesn't deprive the creator of it due to text being practically free to reproduce.

I didn't say I didn't like the middle-men; they are useful. What I object to is trying to model this as if there is no structure of middle-men, when it is actually there.

The problem is, how you ensure all these people get paid? Contracts, law, government.. it gets very complicated very quickly. It's not just a series of independent transactions between two parties, as the neoclassicals like to portray it. It's also the whole social system, which ensures, as you say, nobody is going around stealing and printing money.

You cannot just ignore this structure because it is this structure which determines, if say a film director gets paid say 2x than film cutter. It's not you as a viewer who determines this. That's the main contradiction - this cannot be objectively determined (if we want fairness by any reasonable definition), yet it somehow must be determined for those people to be paid.

> If something can be taken without depriving anybody of it, why is payment needed?

That's a good question. Unfortunately, if you answer it positively, then you are effectively against all property rights, not just intellectual property. For example, let's say I have two houses but I need only one. Why shouldn't you use my otherwise empty house for free, if you keep it in the same order?

Ultimately, again, you will get a contradiction within any sort of moral framework, some people who provide value will not get paid, some will get paid.

You shouldn't, but this example is not the way the existing capitalist economies of the world work.

In your example, a shared resource has labor applied to meet a clear human need, and those that physically do more of it reap more rewards. In the real world, someone owns the field, does no work, pays individuals (potentially) far less than the value of their labor to do the picking, and reaps most of the rewards. Then that field gets passed down to their offspring who continue to gain the rewards without doing any work.

Why should they get to do that?

Buying land and establishing a farm is not "no work".

Passing physical goods to offspring goes in the same bucket as passing monetary units to offspring, goes in the same bucket as passing valuable ideas to offspring.

In other words, parents should be able to pass whatever they want to their offspring.

To inject the state in that process and break it... you're making (basically) a god of the state. It's all powerful, benevolent, and able to do anything in any capacity in any situation.

Because you are surviving by eating your strawberries while I'm loading my excess into my catapult so that I can raid your house and take all of your coffee mugs.
It's worse then that. It's as if every day you got to take 1 skittle, but the rich take 2^n skittles on the nth day. That is, until the skittle system breaks down.
Except when it comes to wealth there is no limit. Ones success does not mean another's demise. If I mine for Bitcoin and make millions, who did I steal wealth from to get mine?

Your Skittles analogy does not work.

To be pedantic, is not the "skittles" part that is the problem but ratherthe "bag" part of the analogy, since it implies a fixed amount. If the OP somehow weaved a skittles factory into the analogy, the analogy could be spared.
There are no truly open systems in the whole universe if physicists are correct. Much less on Earth alone. Entropy is a thing.

About three only abundant energy resource we have is the Sun and it is quite hard to extract it's output.

Then there are certain biological restrictions like having to eat - a chemical input. Arable land is worth quite a lot, fertile much more still. It is not evenly distributed over Earth. (Similar with fertile paths of the oceans and seas.)

Dense energy sources are yet more scarce.

That's not true at all.

For one, you're talking about a digit currency derived from a (currently) finite resource: electricity. While you suck up electricity mining BTC, you add to the demand for said electricity. Higher demand means higher prices, meaning those with money can afford more electricity and mine more BTC, while those who can't afford more electricity to mine cannot. Additionally, those who could afford just enough power for non-BTC mining now struggle to afford power at all; and even if they do, they now must save less, growing the gap.

I didn't say the word "steal"; that's something you derived from my analogy because my analogy is obvious. Resources, and wealth, are all finite; so more for one literally means less or none for another if that one takes as much as they please. Otherwise, I could walk into any bank in the world and just take out as much money as I wanted to.

I was once told that if I were in the middle of a discussion with my wife and she completely refocused the discussion onto something else, I should be happy internally that I was right, but externally I should take the loss.

You're talking about BTC now, so I guess I'll take that L.

It's not so simple. Wealth can be used to gain access to limited resources such as land. Greater wealth inequality means a small segment of the population can afford to buy up all of the housing, driving up prices and blocking others (who may not otherwise be any worse off than they ever were) from owning land. They can then perpetually rent out this land, creating an effortless income for themselves and siphoning value from everyone else.
You are not thinking big enough. Wealth is about power. Siphoning value is a distant second order to commanding the peons to trim your lawn with nail scissors.
Both feed back into one another if used well. Rich can buy power to stay rich and keep their progeny rich until some major levelling drift catches them. (Say a catastrophe of dumb successor or major misfortune.)
But the economy is not zero sum, like that bag. If I have a process that increases the total number of skittles in the bag, is it still unfair for me to take more skittles from it?
So, you're right - the economy is not zero sum, but the resources are. The economy is about moving them here or there.

It depends on where you got those skittles? If you are increasing the skittle count by just taking from other peoples' bags of skittles then you're literally the mortgage/banking industry and there are probably lots of empty skittle bags out there propping up our never-ending-skittle-bag.

Is it a problem for me to do what you say if the skittles themselves become effectively cheaper for everyone else to enjoy? What if systemic issues only happen every 10 years? Or 5 years?
Depends on your view point.

You could argue that the process was never really "yours" in the first place.

Society, our laws, our armies and natural resources, our roads, bridges, power lines, telecoms structure, are 99% of that process and you added 1%.

You simply took advantage of a lot of luck, a little bit of hard work and probably a bunch of your parents' money to end up owning it.

Maybe you should get a chunk of the rewards, but all of it?

How would you propose we make a more meritocratic system that doesn't allow for as much luck-based success?
I suppose you want some incorruptible and relatively unbiased jury to manage it as well?
Tax the wealthy and use that money to invest in infrastructure, education, and economic growth across the entire country, not just the big cities. Combine that with limiting trade with countries that have abysmal minimum wages and standard of living, and you'd have a fantastic recipe for economic growth for the lower and middle classes.

Luck is always involved, but by increasing opportunities while giving workers more leverage, it is definitely doable.

If you end up with a mountain of skittles that you can use to crush anyone who irritates you while everyone else is eating all the skittles they get in order to survive, then yes, that might be a problem.
But does this actually describe the current state of affairs? If not, how would we get there? That seems like a cognitive jump from people taking unequal amounts of skittles.
I dunno. How do you feel about the political power wielded by the wealthy? Too much? Not enough? What would it take to be too much?
Businesses are all too happy to use tactics that aren't 'fair', as long as they're legal-ish. Even then, they lobby for favourable laws, that are rarely also favourable for consumers, and more often hostile.

Make no mistake, only one side is concerned with 'fair'.

No, it's not fair. If you're an anarcho-capitalist, "what is this minimum wage thing?," if you're a communist "seize the means of production!"
If you're an anarcho-capitalist, "what is this minimum wage thing?,"

I thought eliminating the minimum wage was a common sense libertarian ideal. Google Economist Walter Williams!

A great book on income inequality for those interested is Plutocrats by Chrystia Freeland.
"Most Americans would look at these charts and conclude that inequality is out of control. The president, on the other hand, seems to think that inequality isn’t big enough."

Would nobody else reading this want some further information to back up this statement? Its a shame it wasn't nearer the beginning of the article as I could have stopped reading earlier.

It's literally in the preceding paragraph. Notes about how the proposed healthcare law was essentially a transfer of wealth from the poor to the rich, how the proposed tax cuts mainly benefit the richest Americans, and plans to cut school funding.
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"how the proposed tax cuts mainly benefit the richest Americans"

Did you gather this view from reading the tax reform?

https://assets.donaldjtrump.com/trump-tax-reform.pdf

"If you are single and earn less than $25,000,... you will not owe any income tax."

In 2016, if you were single and made $25,000 your tax was $3290. The standard deduction for singles is $6300. Is there a trick here?

End of the estate tax, end of the AMT, moving the top tax bracket from 39.6% to 25%, to start.
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It's an interesting comment in the article considering the data analyzed has zero overlap with the time Trump has been president.
You do not agree with the conclusion / opinion so therefore you will not consider the facts?
If everyone gets 2x as much tomorrow as today, income inequality rises.

Ask people if they would support everyone getting 2x their income tomorrow.

Yes, this is how inflation is leveraged by those at the top to dilute the bottom 98%.

People think in terms of dollars instead of purchasing power, the fed need only boil the water slow enough for people to remain compliant.

Not sure why the downvotes. Purchasing power is all that matters. Would you rather earn $1/hr or $15/hr?

All that matters is what that money can purchase.

This is the funny thing about our steadily increasing minimum wage laws. I've not seen many people discuss why purchasing power keeps declining.

In 1990, $15/hr then was equivalent to $28.72/hr today. [0]

Obviously, something is happening to purchasing power of our dollars, but it doesn't get discussed much.

[0] https://www.dollartimes.com/inflation/inflation.php?amount=1...

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wait, wouldn't scaling income by a constant multiple be the same as not changing anything? Your income and expenses are both doubled.

this would just kill the bank accounts of anyone holding cash.

I think the OP purposes that there are people earning zero, skewing the bottom percentiles, no matter how linearly the income is multiplied.
Why would your expenses double?
If everybody's income raises 2x it means they're paid 2x the previous amount. "they're paid" means someone's expenses are 2x higher to cover it. (you could guess, everyone's expenses, but actually... it's interesting how would that be distributed)
Did you not understand the chart? Its a chart based on percent growth. ×2 across the board would be a flat line. Instead, the income of the ultra rich is vastly up, while for everyone else it is much smaller, not in terms of absolute numbers, but percentage.
That is not, however, what the chart in TFA shows. It shows the bottom 5th percentile with income going down, and income gains increasing in relative (as well as absolute) terms as you get higher up the income percentiles.

FWIW income inequality is normally reported proportionally (using the Gini coefficient or something similar) so even in your hypothetical case inequality would be reported as constant rather than increasing.

I'm pretty sure that's not true, at least by the most common measure of inequality, the Gini index. It's scale invariant. Doubling everyone's income wouldn't be reflected in it one way or another.

More to your actual point, the imagined choice isn't between doubling incomes for everyone or stagnation. It's between shared growth and the top 1% quadrupling their income, the next 50% growing slowly, and the rest dog paddling or getting poorer.

Not as inequality is normally measured, no.
I you apply a scaling factor 𝒌 to everything, nothing changes between the incomes in relative terms and that relative change is what matters and is shown in the chart.
It looks to me that QE3 was a huge part of that later uptick.

its no surprise to me that if you juice the markets and inflate asset prices (mostly stock), that the richest benefit most. what was surprising to me is how bad actually making stuff did. I understand that juicing the markets might not benefit that, but it seemed as though QE3 actually hurt producing tangible things.

Exactly. The distributions looks reasonable until ~2008, when things go wonky. That coincides quite nicely with the bottom of the equities market and the subsequent bull run.

Also, something seems off. The animated chart is not data for a given year, it's for the last 34 year ending in that year. Since you're averaging growth over 34 years, the only way the top percentile can go from 3% growth (over 34 years) to 5% is if you average in really huge growth.

Also, the 34 year measurement makes me suspicious. Seems like an odd time period to capture. Maybe if you made it 30 or 40 years the data isn't quite so compelling?

From the article:

> (The economists used 34-year windows to stay consistent with their original chart, which covered 1980 through 2014.)

I think it's more likely that 34 years were chosen because 1980 - 34 = 1946 makes sense for a post-WW2 analysis. The graph doesn't vary wildly for most of the time (most of the change is a fairly smooth motion), so it seems unlikely that 30 or 40 years would change the conclusion.

Note that a sharp rise in the curve can also be explained by bad years dropping out of the 34-year window. This would probably explain the increases in the 1%'s weath around 1992 and 2003 (1958 and 1969-70 recessions, respectively). See https://en.wikipedia.org/wiki/List_of_recessions_in_the_Unit...

Income inequality has been a visible problem for more than 10 years.

Income Progress across the American Income Distribution, 2000-2005 (https://www.brookings.edu/testimonies/income-progress-across...)

"Finally, incomes are growing less equal. Over the past quarter century Americans at the top of the income distribution have seen much faster income growth than people in the middle class. If average income grows 1% a year and top earners enjoy gains of 2% a year, many people in the middle and bottom will see their incomes grow much more slowly than 1% a year. Top income earners experienced sharp income declines in the last recession, but in the last couple of years their incomes have rebounded strongly. This reinforces the impression that the gains from prosperity have flowed disproportionately to people at the top rather than in the middle of the distribution."

Income Gap Is Widening, Data Shows (https://mobile.nytimes.com/2007/03/29/business/29tax.html)

"Income inequality grew significantly in 2005, with the top 1 percent of Americans — those with incomes that year of more than $348,000 — receiving their largest share of national income since 1928, analysis of newly released tax data shows.'

This article and the accompanying chart is specifically about _income_, not capital gains.
Income includes capital gains, not only wages.

"Income is the sum of all the wages, salaries, profits, interests payments, rents, and other forms of earnings received... in a given period of time." Case, K. & Fair, R. (2007). Principles of Economics, p. 54.

none of those things in the list you supplied are capital gains.

when i buy a stock at $100/share and i sell it later at $110/share, that gain is not a wage, salary, profit, interest, rent or any other form of earning - it is called a "capital gain".

Capital gains are considered income.

In some jurisdictions they receive special tax treatment, but they are income nonetheless.

For example, for the US, they are included in the "Adjusted Gross Income" calculated on a 1040 tax form, but the amount of tax on the income due to capital gains is calculated differently than the tax on wages.

If you look at section 3 of the paper (which goes over their methodology), they explicitly talk about capital income:

http://gabriel-zucman.eu/files/PSZ2017.pdf

The chart is measuring income growth not wealth growth so I would imagine QE probably isn't that large of a factor actually.
The line becomes flat around 1990, and the spike on the right appears immediately and grows quickly. Post-2008 looks like a fluctuation on that growth.
When inequality grows, empires shrink and eventually disappear: https://www.theguardian.com/business/2012/feb/05/inequality-...

And let's not kid ourselves. Those on top intend on staying there by growing the gap.

I don't really understand how that article by the Guardian supports your thesis that, "when inequality grows, empires shrink and eventually disappear."

What do you mean?

What's not clear...it's even in the title. Inequality leads to economic collapse. Here's the end of the article "An economic model that allows the richest members of society to accumulate a larger and larger share of the cake will eventually self-destruct. It is a lesson that is yet to be learned." Generally any state, nation or empire is heavily dependent on a having a strong and healthy economy to remain stable...
It's my understanding that there is some churn in the top 1% of earners. If the economy transitioned to a place where people had big spikes and dips in their annual income, couldn't the graph look the same? Doesn't that sound like a "gig economy"?

In other words, why graph income and not wealth?

> In other words, why graph income and not wealth?

I think it's because people's wealth is really hard to estimate. The border between people's assets and their companies', foundations' and what not are usually blurry enough that you would get a graph that shows no insight.

Although income is not a great KPI, at least there are reliable methods to figure it out, or at least make estimates with a quite acceptable precision.

Sure, but there are downsides to this approach as well.

Say someone could have a small business that takes off and retires after a few years with a reasonable retirement fund. This doesn't fit the mold of a hoarding 1%-er.

It seems like discouraging this kind of income spike would actually decrease social mobility.

https://www.theatlantic.com/business/archive/2016/07/social-...

"“The probability of ending where you start has gone up, and the probability of moving up from where you start has gone down,” Carr said. For instance, the chance that someone starting in the bottom 10 percent would move above the 40th percentile decreased by 16 percent. The chance that someone starting in the middle of the earnings distribution would reach one of the top two earnings deciles decreased by 20 percent. Yet people who started in the seventh decile are 12 percent more likely to end up in the fifth or sixth decile—a drop in earnings—than they used to be."

...I'm saying that depending on what opportunities look like in the 21st century, this could actually be made worse by focusing on income instead of wealth.
Any investor can make 4-6% annual gains in the stock market year over year. I don't think that says much about inequality as a whole.
First you have to have money to invest. Then you have to have enough money to make it worth considering the transaction fees. The bottom part has debts, not spare cash for investing, so the stock market is almost completely irrelevant for them.
If you inherit $1m+, you can live off of that and not work a day in your life (or at least severely increase how much money you save) while the rest of us toil away as wage slaves for 40+ years.
It is difficult for American workers to compete with Chinese or Indian people wages. The good thing is that the global inequality is declining.[0] My guess is that when the incomes in low-wage exporter countries get closer to the developed countries, then we may see a wage increase again.

[0] - https://ourworldindata.org/global-economic-inequality

This has been predicted: https://en.wikipedia.org/wiki/Factor_price_equalization. Under this model, incomes (especially those of lower-skilled workers) in developing and developed countries will eventually meet somewhere in the middle. Once all countries are equally developed, this downwards pressure on low-skilled wages in developed countries will abate. Restrictions on outsourcing and trade would prevent this to a degree, but doing so would slow down the income increases in developing countries, hence many economists do not support such restrictions, as it's hard to make an economic argument that developed countries' citizens should be privileged over those of developing countries (although a political argument can certainly be made), and more trade is generally seen as increasing the overall size of the pie.
I am not sure how can you blame inequality to other nations. Why American workers cannot complete with other nationals, while it seems American elites are still winning?

The truth is that the elites in any nations are gaining from the poor.

The idea is to blame one nation's inequality on another nation is like blaming one poor man's tragedy on another poor man's being more tragic; while ignore the ones who causes the tragedy...

Sorry to have to disenchant you, but the underlying paper by Mauro (affiliation: IMF) that the linked article is citing actually only shows that the global Gini index is going up (less income inequality). And, in the same time-span (since the 80's), the Gini index in the US was also rising, slightly.

The problem is that the Gini index is built to be robust against outliers (those 1%). So no, both locally (US) and globally, inequality is on the rise - even if the Gini index is going up in both cases.

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Taxation should compensate for the fact that the top 0.1% of people have the means to pay specialists to optimize their financial gains.

This advantage has nothing to do with individual skill or hard working ethics. Taxation schemes that don't take this into account are simply unfair.

There is a cool economic / social principal called "Preferential Attachment" that helps describe this a bit.

From Wikipedia: "A preferential attachment process is any of a class of Citation dynamics processes in which some quantity, typically some form of wealth or credit, is distributed among a number of individuals or objects according to how much they already have, so that those who are already wealthy receive more than those who are not."

It's an interesting principle that plays out in economics as well as other situations where skill is involved. It is similar in some ways to the "80/20 rule" if you are familiar.

I would definitely recommend researching the topic a bit. It will definitely add some dynamics to your view of income inequality.

Poverty is a problem. But is inequality bad? It doesn't bother me that when billionaires have private jets and I don't. I'm not rich, but I can live comfortably, especially if you look at history. The average american has at least one air conditioned car. I'm sure that would make the pharaoh of ancient egypt jealous. He would call inequality on us.