I understand the evidence and the virtually iron clad case for evolution and so I know it happens and it is how we got here. Nevertheless, it remains extremely non-obvious to me if I try to actually comprehend how it could actually have happened.
Imagine some human male, just old enough to be capable of fathering a child.
Now imagine standing next to him his father, from when his father was just old enough to be capable of fathering children.
Next to him, put his father, at that age, and so on. Go back to their earliest male direct paternal ancestor for which it still makes sense to say it is male (so a little ways past a billion years ago, when sexual reproduction appeared).
Visualize that long line of organisms, each fathered by the one before it, and father to the one after it. The only apparent differences between each organism in that line and its father or child, even under a detailed internal examination, are either very very minor or are cosmetic or size differences.
Yet if you take two organisms far apart in the line, you get massive differences. On one end you have a human, and a good distance down the line you've got something that swims around in the ocean, and differs drastically from the human. Different number of heart chambers, something other than lungs for breathing, and more.
Now go somewhere between those two, where you can find something that lives on land, but uses four legs, not two legs and two arms.
It is not at all obvious how this is possible, because remember, to get from that thing in the water to that thing on four legs, and from that thing on four legs to us, the changes from father to son every step of the way have to essentially be continuous.
Intuitively, that would seem to mean that between the four legged ancestor and the two leg two arm ancestors there had to be many generations where the individuals had two limbs that were somewhere between legs and arms. They would be not as good at four legged things as "normal" four legged animals, and not as good at arm things as "normal" armed animals. Similar argument for every other aspect the differs significantly between them. And yet, despite those disadvantages, everyone in line managed to make it at least long enough to successfully reproduce [1].
It just seems that so many low probability sequential things had to happened for this to work that I don't find it obvious that it is is possible, even taking into account that this possible evolution space was being explored by a huge number of organisms in parallel and taking into account that our end of the line is not special from an understanding evolution viewpoint--it just seems special to use because it is our end.
It's essentially for me like geometry theorems in higher dimensional spaces. I can understand their proofs and know they are true, but cannot find them obvious the way 2D and 3D geometry can be.
[1] Which is kind of sobering, since I do not have kids, meaning that I dropped the ball and ended a direct line of father/son descent going back over a billion years.
I think this is a great point that, for some reason, I can’t recall ever seeing thoroughly addressed. (To be fair, I don’t work in the life sciences, so cmiiw).
I definitely believe in evolution, but wonder if maybe something is missing, especially when it comes to the sort of cross-species changes you’re discussing.
"They would be not as good at four legged things as "normal" four legged animals, and not as good at arm things as "normal" armed animals."
So, like seals, penguins, walruses, mudskippers, and many others? That is, there are many examples of species which don't fit well as sea creatures or terrestrial creatures. But they are just as successful, evolutionary speaking, as you or I.
In any case, the evolutionary argument is our early tetrapodal fish ancestor found that it was (likely marginally) better to sometimes be on land - like a mudskipper. Since there were no other animals in that niche, the descendants who could be more effective on dry land were even more successful in having children, etc.
How well would you do if you had to live in a place which was flooded over your head for a few hours day?
It is really hard to think about "deep time" like this - time long enough for mountains to form and disappear is also time long enough for species to change by quite a bit.
> He was not particularly fast in his thinking nor was he mathematically gifted.
May I suggest that, the media tends to declare someone a genius if his work cannot be understood by laymen. Physicists like Einstein are declared true geniuses because the mathematics they use look mysterious and magical. But anyone can understand Darwin's prose. Personally, I think they are all human and by defining them as genius we deify them.
>the media tends to declare someone a genius if his work cannot be understood by laymen
That's not particularly true. I don't think there is a single mathematician whose papers are understandable to laypeople (by laypeople, I mean the average person, who remembers some but not all of highschool math). What's really going on here is that Einstein made a tremendous contribution to a tower that was already quite tall, while Darwin's contribution was to the ground floor where everybody could get on. The maths analogy to Darwin would be one of the inventors of Algebra - evolution is taught to children right along with the foundations of math and physics.
True. And also he got mathematical help from Marcel Grossmann. Poincare too was doing work on the theory of relativity.
Also one of the selling points of relativity in the early days was the difficulty of its math. I think it was Eddington who said that "only three people understood General Relativity."
>Einstein made a tremendous contribution to a tower that was already quite tall, while Darwin's contribution was to the ground floor where everybody could get on.
I see your point, but if Darwin created a new field but Einstein contributed to an existing field, Darwin ought to be considered a greater genius. (Personally, I think it is better not to define anyone as a genius so that we can continue to evaluate their work critically.)
I'm saying that we value things we don't understand more than things we do understand.
> That's not particularly true. I don't think there is a single mathematician whose papers are understandable to laypeople
I suspect that the media would indeed portray most mathematicians as geniuses, though. In fact most laypeople I know would agree that they were, and I know some fairly well educated laypeople in my opinion.
By mathematician, I mean a publishing academic with a PhD in math (or some rough equivalent to that).
The prime glory of Einstein's 1905 papers is their accessibility.
Zur Elektrodynamik bewegter Körper is famously devoid of footnotes, and contains no insurmountable math.
Of course he dashed off another three articles in the same edition of Annalen der Physik, all on the same level of comprehensibility, one of which scored him a Nobel prize.
The difficulty of relativity was and is a silly meme. The basic principles are straightforward. I understood them as a boy, and I am - by a regrettably enormous stretch - no genius.
If so, we must credit academic scholasticism for turning Einstein's simple theory presented in couple of brief journal articles into a 1,275 page book (over 5 pounds!). If those original papers required such a book to make them intelligible, then I would not call General Relativity a simple theory.
The book is of course GR bible Gravitation by MTW.
Actually I think there is a parallel between Einstein and Darwin, but it's not the brilliance of their thinking. Most of what Einstein came up with is fairly obvious in hindsight. The one thing that wasn't is the math behind General Relativity: but Einstein needed the help of a mathematician with that.
What marks them both is their willingness to abandon the established dogma when it didn't match the facts, and to set off exploring alternative ideas. Both of them are iconoclasts: Einstein because he proposed time wasn't absolute, which is a seriously batty suggestion to just about everyone unfamiliar with his work because we are very familiar with how time works here on earth. To me Darwin the more impressive in this regard because his idea wasn't just seriously batty (no one had seen evolution at work when he proposed it, despite living in it's midst) but just putting it out there was enough to get others burned at the stake.
Another similarity is neither was your typical extroverted iconoclast. Quite the reverse in fact: they doggedly followed their favoured theories because the felt they did a better job of explaining the facts. Both seemingly didn't care that others would think less of them for their ideas.
You can point to others in the same mould: Galileo for instance. The doctor that endured years of ridicule from his peers for suggest gastric ulcers were the result of a bacterial infection is another.
Nonetheless Einstein stands out for second reason: he did it more than once.
Certain people have an exceptional ability to communicate their thoughts and ideas. Now imagine if someone didn’t have that same mental quickness, or struggles to turn parallel thought process into serial form. Now assume that work was not quantitative but more qualitative in nature. Seems obviously that these people are all around us but it will be difficult to identify them as a genius before their ideas are accepted. Maybe MRIs will help us better uncover all of the various geniuses of the world so that we can take them a little more seriously. Entrepreneurship is interesting in this regard because it’s another way to potentially keep score.
Not all the sciences have many really -famous- people.
Geology has developed a great deal in the past 2 centuries; not many geologists are "stars". How many people can name those among the most influential geologists?
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[ 3.0 ms ] story [ 64.8 ms ] threadImagine some human male, just old enough to be capable of fathering a child.
Now imagine standing next to him his father, from when his father was just old enough to be capable of fathering children.
Next to him, put his father, at that age, and so on. Go back to their earliest male direct paternal ancestor for which it still makes sense to say it is male (so a little ways past a billion years ago, when sexual reproduction appeared).
Visualize that long line of organisms, each fathered by the one before it, and father to the one after it. The only apparent differences between each organism in that line and its father or child, even under a detailed internal examination, are either very very minor or are cosmetic or size differences.
Yet if you take two organisms far apart in the line, you get massive differences. On one end you have a human, and a good distance down the line you've got something that swims around in the ocean, and differs drastically from the human. Different number of heart chambers, something other than lungs for breathing, and more.
Now go somewhere between those two, where you can find something that lives on land, but uses four legs, not two legs and two arms.
It is not at all obvious how this is possible, because remember, to get from that thing in the water to that thing on four legs, and from that thing on four legs to us, the changes from father to son every step of the way have to essentially be continuous.
Intuitively, that would seem to mean that between the four legged ancestor and the two leg two arm ancestors there had to be many generations where the individuals had two limbs that were somewhere between legs and arms. They would be not as good at four legged things as "normal" four legged animals, and not as good at arm things as "normal" armed animals. Similar argument for every other aspect the differs significantly between them. And yet, despite those disadvantages, everyone in line managed to make it at least long enough to successfully reproduce [1].
It just seems that so many low probability sequential things had to happened for this to work that I don't find it obvious that it is is possible, even taking into account that this possible evolution space was being explored by a huge number of organisms in parallel and taking into account that our end of the line is not special from an understanding evolution viewpoint--it just seems special to use because it is our end.
It's essentially for me like geometry theorems in higher dimensional spaces. I can understand their proofs and know they are true, but cannot find them obvious the way 2D and 3D geometry can be.
[1] Which is kind of sobering, since I do not have kids, meaning that I dropped the ball and ended a direct line of father/son descent going back over a billion years.
I definitely believe in evolution, but wonder if maybe something is missing, especially when it comes to the sort of cross-species changes you’re discussing.
So, like seals, penguins, walruses, mudskippers, and many others? That is, there are many examples of species which don't fit well as sea creatures or terrestrial creatures. But they are just as successful, evolutionary speaking, as you or I.
In any case, the evolutionary argument is our early tetrapodal fish ancestor found that it was (likely marginally) better to sometimes be on land - like a mudskipper. Since there were no other animals in that niche, the descendants who could be more effective on dry land were even more successful in having children, etc.
How well would you do if you had to live in a place which was flooded over your head for a few hours day?
It is really hard to think about "deep time" like this - time long enough for mountains to form and disappear is also time long enough for species to change by quite a bit.
May I suggest that, the media tends to declare someone a genius if his work cannot be understood by laymen. Physicists like Einstein are declared true geniuses because the mathematics they use look mysterious and magical. But anyone can understand Darwin's prose. Personally, I think they are all human and by defining them as genius we deify them.
That's not particularly true. I don't think there is a single mathematician whose papers are understandable to laypeople (by laypeople, I mean the average person, who remembers some but not all of highschool math). What's really going on here is that Einstein made a tremendous contribution to a tower that was already quite tall, while Darwin's contribution was to the ground floor where everybody could get on. The maths analogy to Darwin would be one of the inventors of Algebra - evolution is taught to children right along with the foundations of math and physics.
Also one of the selling points of relativity in the early days was the difficulty of its math. I think it was Eddington who said that "only three people understood General Relativity."
I see your point, but if Darwin created a new field but Einstein contributed to an existing field, Darwin ought to be considered a greater genius. (Personally, I think it is better not to define anyone as a genius so that we can continue to evaluate their work critically.)
I'm saying that we value things we don't understand more than things we do understand.
I suspect that the media would indeed portray most mathematicians as geniuses, though. In fact most laypeople I know would agree that they were, and I know some fairly well educated laypeople in my opinion.
By mathematician, I mean a publishing academic with a PhD in math (or some rough equivalent to that).
Of course he dashed off another three articles in the same edition of Annalen der Physik, all on the same level of comprehensibility, one of which scored him a Nobel prize.
The difficulty of relativity was and is a silly meme. The basic principles are straightforward. I understood them as a boy, and I am - by a regrettably enormous stretch - no genius.
The book is of course GR bible Gravitation by MTW.
https://www.amazon.com/Gravitation-Charles-W-Misner/dp/07167...
What marks them both is their willingness to abandon the established dogma when it didn't match the facts, and to set off exploring alternative ideas. Both of them are iconoclasts: Einstein because he proposed time wasn't absolute, which is a seriously batty suggestion to just about everyone unfamiliar with his work because we are very familiar with how time works here on earth. To me Darwin the more impressive in this regard because his idea wasn't just seriously batty (no one had seen evolution at work when he proposed it, despite living in it's midst) but just putting it out there was enough to get others burned at the stake.
Another similarity is neither was your typical extroverted iconoclast. Quite the reverse in fact: they doggedly followed their favoured theories because the felt they did a better job of explaining the facts. Both seemingly didn't care that others would think less of them for their ideas.
You can point to others in the same mould: Galileo for instance. The doctor that endured years of ridicule from his peers for suggest gastric ulcers were the result of a bacterial infection is another.
Nonetheless Einstein stands out for second reason: he did it more than once.
Not everything has to happen at high speed.
Geology has developed a great deal in the past 2 centuries; not many geologists are "stars". How many people can name those among the most influential geologists?
Apart from Darwin, who most people wouldn't think of as a geologist! And yet ... https://blogs.scientificamerican.com/rosetta-stones/darwin-g...