It is! Though I've ignored that in my games because I feel like recall knowledge is a little limited. I allow one attempt out of combat to recall knowledge, allow repeated checks in combat to identify creatures, and don't don't give incorrect information on a crit fail. The last bit is why I don't bother making the rolls secret.
Isn't the secret trait on most skill checks for knowledge? I love that critical fails on those have the GM give plausible but wrong information.
It is! Though I've ignored that in my games because I feel like recall knowledge is a little limited. I allow one attempt out of combat to recall knowledge, allow repeated checks in combat to identify creatures, and don't don't give incorrect information on a crit fail. The last bit is why I don't bother making the rolls secret.