Stupidity: Mouch is investigating an arson allegation. He states to a lady he's going to do his thing and speak to some of the residents. As he goes down the hall to speak with the residents he passes a huge stain on the carpet that looks like blood or something and walks right past it without stopping. (00:23:57)
Counting Your Breaths - S10-E3
Stupidity: Sylvie Brett is driving the ambulance on an emergency call. She is barehanded when she is driving, and then she has on blue surgical gloves while driving. Since she is driving during an emergency, there's no opportunity to put on gloves. (00:26:10)