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To be fair, I can do 3 balls effortlessly, but I can't do 1 ball like it is in this description, I just have a lot of error correction, enough to do it pretty much indefinitely. But I cannot reliably throw it accurately to the other hand.

Our software stack is the opposite of that.

Longtime juggler here.

Outside of more complicated tricks like the claw and other specialized patterns, the most common juggling patterns (such as the cascade [1]) don’t rely as much on pure handeye coordination as they do on maintaining a consistent, even toss. The key is throwing each ball so it rises and falls in a predictable arc, so it lands approximately in the same spot where your other hand is waiting to catch it.

When I teach complete beginners, I actually start with a set of special handkerchiefs. They fall more slowly than balls, which gives learners more time to react and makes it much easier to see and follow the path of each object through the air.

[1] - https://en.wikipedia.org/wiki/Cascade_(juggling)

I learned myself juggling out of boredom when I was kid. Just tennis balls or similar stuff I found. In early 90s, no info anywhere, just started.

2 balls with 2 hands, 2 balls with 1 hand and finally 3 with 2 hands. Didnt push it further, we had too low ceiling for bigger throws that 4 balls would require, and juggling 2 balls in each hand was... tricky to keep up for longer.

Consistency of the toss is exactly how I could keep up, if 1 went off I lost it usually within few throws. Unless I did it on purpose. Recently showed it to my kids, obviously rusty but still had the moves.

Damn, I had so much free time as a kid its surreal now.

I taught myself in junior high to juggle three balls with two hands and two balls with one hand. It's not a huge accomplishment but what amazes me is that I can go years without trying it and when an opportunity comes up I can just do it again, within just a couple of tries. Those neuronal connections just never go away.
Same! Every so often I remember that I can juggle, and spend a minute or two juggling, and feel better for it. And then I forget for weeks or months.

(I taught myself while procrastinating from exam revision, many years ago. I started with a large bag of oranges. Just enough of an incentive not to drop them, no real harm when they did hit the floor.)

I taught myself to juggle in a weird way. I had 3 lightweight plastic cubes, laid down on the bed, and began tossing them directly over my head (my hands on either side of my head). I think it gave me a good sense of where each cube was at all times.Once I got good at juggling supine, I just transitioned to sitting up straight.
> I taught myself in junior high

I had a class in junior high where we had time each day to mess around with juggling.

I got good at the balls and then got pretty good at the bowling pins things (not as heavy but same shape).

I could do 5 pins for a decent amount of time. It felt really good when I was in the groove of the flow, the arc, the spin and the sequence.

I tried 7 pins and was pretty excited to get a cycle or two successfully.

> Another mistake is completely ignoring the ball and staring into the distance. I'm not entirely sure why, but I've seen it a bunch more with *rats* than anywhere else. In any case, I would recommend you just casually glance up at the ball as it reaches the top of its arc

Is 'rats' a juggling jargon I'm unfamiliar with? Or do rats stare into the distance often?

I derailed after this sentence. I searched for more uses of "rats" in the article, then looked in the HN comments to see if it was a bit of jargon that I was unaware of. I read "Lessons from the art of juggling" years ago, but despite the primer, I couldn't get past the unanswerable question of whether I was, in fact, a "rat".
Just today I improved my record to 18 minutes. Btw, I noticed my juggling is completely subconscious, I don't move my hands voluntarily where the ball is, the hands move on its own.
A little disappointed that the writer never attempts to address the title of the post, which is either a) why most people can't juggle a single ball, or b) how the author even knows this to be true, aside from some limited anecdata.

My (admittedly limited) juggling experience would indicate something closer to "Anyone can juggle", or that your average person, particularly young people, can learn to juggle one, two, or even three balls with an afternoon of practice, but I suppose that makes for a worse title.

I tried and failed to learn to juggle three balls many times, I've just got terrible coordination. But one day I stood over a bed and just threw them in the air and listened to the rhythm of the "thuds" as the missed balls hit the mattress. As soon as I'd got that down it was like a switch clicked and my hands knew "when" to be ready for the catch, rather than trying to follow the balls to catch them. I never managed four, so mileage may vary with this technique, but it was a very surprising lightbulb moment.
Didn't expect this to actually be about juggling, but I'm not complaining
Juggling is so much fun! I use 3 balls and felt like it was easy, when you know where to start and simply follow the process step by step.

Memory Masters draw me to it, and I found some super normal niche Streamers showing what to do.

Juggling is some sort of meditation.

Enjoy!

Thanks for posting this. You reminded me I have three juggling balls collecting dust behind my monitor. I forgot how fun it is! As others have said I'm surprised the muscle memory is still there even after a few years without trying.
Just juggling with balls in the air gets boring very quickly, and the added numbers don't make it much different. Learning statics and flows from contact juggling, but performing them with standard juggling balls is so much more fun. And then you discover statics with hoops: https://www.youtube.com/watch?v=PF6UuPsw2i4
I can only juggle 3, but I prefer clubs. Balls are so boring they are so small and not spectacular. Clubs on the other hand, man they are rotating. Once, twice, treetimes, backwards. I believe that if someone stuck at this basic level of juggling 3 balls, he should try clubs - at least for me it's pure satisfaction watching these rotating in various variants before.
I assumed most software eng from the early aughts can all juggle.
The other's in Albert Hall
Is there anything HN related involved here other than autism?
The first HN submission ever that got me to put down my device and go outside, and probably going to get me hooked.
Profoundly disagree with the author on skipping 6. It helped so much with my 7.

I do agree on clubs though. They were as big of a revelation as siteswap when I learned them and I'd highly recommend trying. Most juggling clubs(accumulations of people, not object) have loaner clubs and nice people willing to share theirs as well as teach.

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Worst thing about juggling is that you get a very good instinct to catch falling stuff, even if it's sharp and pointy.
I thought this post was going to be a metaphor about how most people can barely handle 1 project, while some people need to multiple projects for it to feel natural...
I've wanted to code a VR game for juggling but never found time for it.

Feels like it would be super-easy-to-code and probably would be lucrative. Implement "slow down time" so people can practice juggling in slow motion, add some other features like catch radius and bias towards consistent height of throws and you've got a great game!

> When I'm bored, I just whip out my balls and start having a play. And people watch, and sometimes join in.

Nice.

(I'm sure the author did this intentionally)

definitely did. lots of schweddy balls style humor
Many of you might know of Noisebridge, a beloved hackerspace in San Francisco. They had (have?) a juggling workshop every saturday called "Juggling with Judy", taught by Judy Pinelli, founder of the famed Pickle Family Circus (and a huge influence on Cirque Du Soleil).

I had no idea how famous or influential she was. She first taught us how to make our own juggling balls: snip the ends of a balloon, fill with enough rice to feel comfortable in the hand, then wrap that with another balloon to seal the rice in, then snip the ends of the second balloon.

Then she went through the usual sequence: throw a ball, er, balloon, from one hand to the next, then practice with two and so on. By the end of that 2 hour session, we had got the essentials.

The remarkable thing about this workshop was that Judy was at an advanced stage of multiple sclerosis at that point. She was pretty much completely immobile from the neck down, and couldn't even see our hands properly from her wheelchair. She could only see the arc of the ball, but that was sufficient information for her to tell us how we could improve. "Pull your elbow in". "Focus on the left hand, the right will follow".

After the 2 hour workshop, she'd go to Golden Gate park to teach juggling. All for free. I feel extraordinarily privileged. She's been my polestar in life.

> She was pretty much completely immobile from the neck down, and couldn't even see our hands properly from her wheelchair. She could only see the arc of the ball, but that was sufficient information for her to tell us how we could improve. "Pull your elbow in". "Focus on the left hand, the right will follow".

I've both been a coach (paintball/martial arts) and been coached (golf) and it really is wild how good your brain can become at seeing the outcome or just a piece of the process and then working backwards to a root cause.

I sometimes make the analogy "in particle physics, you don't actually see the collision. You see the after effects and then figure out what happened by going backwards to what must have occurred."

Great story about juggling, thanks.
Noisebridge! I went there as a tourist! I visited SF (I'm from Amsterdam), saw Noisebridge and felt right at home :)