I would pick different examples. All the ones you mention require access to some special resource like an airplane or cadavers, so you basically can't learn anything until after you get past the gatekeeper.
Computers are cheap enough for far more people, and you can learn without someone's allowing you to.
Having said that you do get the sense that some people will not be able to code regardless of access. I even hear about CS graduates who basically decide having learned a bit that it's not for them. This is somewhere between "can't be done" and "don't want to".
We can flood the world with more literature graduates than will ever be needed, but it's not the same for tech skills, somehow. I'm not sure it's intelligence, that seems to just punt the issue into "what is intelligence". But it's definitely the case that you get this sense that some people reach a point where they can dive into technical issues without limit (you see their hobby projects here every few days) and those who either can't or won't.
Computers are cheap enough for far more people, and you can learn without someone's allowing you to.
Having said that you do get the sense that some people will not be able to code regardless of access. I even hear about CS graduates who basically decide having learned a bit that it's not for them. This is somewhere between "can't be done" and "don't want to".
We can flood the world with more literature graduates than will ever be needed, but it's not the same for tech skills, somehow. I'm not sure it's intelligence, that seems to just punt the issue into "what is intelligence". But it's definitely the case that you get this sense that some people reach a point where they can dive into technical issues without limit (you see their hobby projects here every few days) and those who either can't or won't.