So... you won't walk the rest of your party where the first PC failed their Perception check because the character doesn't know?

I totaly will ...
I see it as "something seem off around here, but i cant see anything ... would you people help me look out?" :P

You never know what have you missed ...
Especialy on first playthrough. It can be trap, it can be secret stash, it can be keyhole ... it can be some clue to quest.