Yes, math is hard and successful academics in the field are super smart. And yes, mathematical ability declines with age.
However, I don't see that math is really all that important for 99% of web 2.0 startups.
However, I don't see that math is really all that important for 99% of web 2.0 startups.
Anyway, older people bring critical skills to a startup such as creativity, which can improve over time as you try and observe all sorts of ideas.