[noir_lord]

I wonder about the ELO thing how much is age and how much is priorities changing (kids, families, the realisation that outside the top15 there isn't much of a living in playing vs teaching/writing which takes you away from teaching etc).

Anand just won the rapid chess world championship at 48, Korchnoi was top-100 into his 70's.

Not saying there isn't some decline just that it may not be as pronounced as the raw ELO figures would indicate.