I know many people 3 times older than I am with much more flexible minds. I also don't think there is a biological basis for inflexible minds.
Actually the smartest person and the most flexible mind I know is also the oldest man (87 y/o) I know. It's infeasible for younger people to have his outlook, that simply comes with his life experience.
Actually the smartest person and the most flexible mind I know is also the oldest man (87 y/o) I know. It's infeasible for younger people to have his outlook, that simply comes with his life experience.