Could this analysis be a lower bound? I'm not familiar with Crafty, but given that all the games were annotated in 6 hours of wall-clock time, this analysis can't be going extremely deep into the game-tree. There may be many more moves which would qualify as blunders if analyzed as deeply as Regan's work in the other comment.
Could this analysis be a lower bound? I'm not familiar with Crafty, but given that all the games were annotated in 6 hours of wall-clock time, this analysis can't be going extremely deep into the game-tree. There may be many more moves which would qualify as blunders if analyzed as deeply as Regan's work in the other comment.