Only it was 640K (the old IBM PC limitation), and Gates never said it (at least can't be verified from any source).
But even if he HAD said it, it's still a perfectly fine claim, since it spoke for users of the IBM PC of the time, given programs and common applications of the time. And as it's said to be told around 1980-81 it was totally write: it took half a decade or more for the limit to even matter to users. Obviously the hypothetical Gates would have perfectly known future PCs would need more memory, and there's nothing in the quote to imply it was meant as something that would be true forever.
Zuckerberg's line on the other hand is total BS. But then again his main claim is hitting the jackpot with the right crappy PHP app that appealed to the zeitgeist. So more of an "right idea at the right time" person than a real genius like Bill Joy.
Old people do tend to be wiser. When you are 20 you simply can't make up for the 10 extra years of experience you are missing against someone who is 30...and someone who is 50 and has used the last 20 years improving themselves (after having a decade of their 20s to make mistakes you can't imagine)...forget about it. No matter how smart you are you can't overcome the slow accumulation of experience that time brings.
I think what Goodenough says about not closing your mind as you age is key. Some old people stop learning, but if you combine a lifetime of learning and being willing to change your mind, it's remarkable what you can do. One of the great detriments to the tech industry is the youth movement. Giving college kids the world is detrimental to the world and ultimately those people. Adversity is good.
You can't know what you don't know?
The article is about genius, but the strengths you attach to the young here apply more to what I would consider being a good worker drone.
When considering the cases of both Goodenough and Zuckerberg, my takeaway is that when it comes to genius, age is a non-factor.
It's just a poorly managed/developed project. Plain and simple.
It appears to me that every bodily system slowly degrades as you age. Care to site any scientific studies showing that intelligence does not decline with age? That is a surprising claim to make.
All the stuff you mention, you can measure. How do you measure intelligence? The kind of intelligence/wisdom that leads to making new scientific discoveries?
I will posit that raw intellectual horsepower might decline with age (and even then, what the hell is this thing and how would we measure it?), but it's also clear to me that decades of accumulated wisdom and study can increase the likelihood of making a new discovery.
Of course eventually you start running up against mechanical limits and you decline. But that peak is much later than the peak in sensory bandwidth.
Studies show that older people are smarter. Despite your apparent youth, I'm fairly certain you can find the relevant studies.
https://en.wikipedia.org/wiki/Fluid_and_crystallized_intelli... :
"In psychology, fluid and crystallized intelligence are factors of general intelligence, originally identified by Raymond Cattell."
Fluid intelligence peaks around 18 years of age, then declines.
Crystallized intelligence is your accumulation of knowledge and skill. It increases until age 65 then slowly declines.
Readers should be careful not to interpret this as meaning you're washed up at age 66. It means you're still close to your peak.
If peak physical condition was correlated with peak intelligence, we would expect 17-18 year olds to be making major changes in our world
However, you don't need to be 94 to be brilliant either.
When you're young you have fewer commitments, more time, more energy, and an ability to recover from marathon slogs to get work done. Your lack of experience may hamper you in some fields, but it also allows you to see the World from a different angle which might, given your field, be an advantage.
When you're older, you will have far more experience, insight, and the ability to allow your subconscious to bring together disparate experiences and thoughts into new ideas. However, you may be cognitively locked into seeing things a certain way, you will more likely have other draws on your time and you're less likely to be able to do (or recover from), 100-hour weeks.
Both groups have something to offer, but the idea that one group is better than the other is ludicrous.
Young people are not smarter. Old people are not wiser. They each just have different life experiences, abilities and ways of prioritising time.