[karmakurtisaani]

The age limit of 40 kind of ruins the Fields medal as the top prize tho. Sure, getting it is absolutely huge, but what about the people whose work's value is apparent only after decades?

[lp4vn]

This kind of age restriction is indeed pretty stupid, Andrew Wiles was too old for the Fields medal for example.

[axlee]

The Fields medal is there to encourage further work, per Fields himself.