Follow Up/Reviewing Comments & The Work It Requires - Explaining Why Allowing Comments Is Work

"It is so easy for the fans in the stands of a sports arena, to give advice and criticism To the Players on the Field."
HERE IS LINK TO VIDEO IF YOU HAVE NOT SEEN IT: https://www.youtube.com/watch?v=nv2kz3A85bo

Trying to explain why comments can be helpful or a waste of time.