[omermikhailk]

I sort of disagree there, since you don't necessarily have to decide on a career field as young as 16.

If someone takes Math, one science and two humanities, they can apply for virtually any degree program they want (maybe with the exception of medicine, since I think that's a little stricter).

Sure, your application to a competitive degree program at a top-tier university won't be as strong compared to someone who's picked subjects showing a higher level of commitment/resolve to whatever they're applying for, but it's fine for most cases I'd say.