Dumb is the last adjective I would use to describe Knuth, even if you believe that becoming old makes you dumb, like you clearly do. My advice to you is to nev

Dumb is the last adjective I would use to describe Knuth, even if you believe that becoming old makes you dumb, like you clearly do. My advice to you is to never dismiss anyone's opinion just for being old. And I hope you lose your ingrained ageism before you become old yourself, otherwise you'll find old age intolerable.