Most of what Einstein achieved were during his miracle years from 1905 - 1915 when he was in his 20's and 30's. But just to level set, I am not an ageist, I am 58 years old. And all this is just my opinion of course, but I find for myself it is harder and harder to accept new ideas. But being aware of this, I try to always listen and embrace new "crazy" ideas young people come up with. I think older people like me have wisdom and younger people have new ideas and if there was a way to combine those things it would be powerful. Perhaps stating the obvious there.