I was just watching Titanic and spent 20 minutes looking up the effects of hypothermia and discovering that Jack may have been alive and in stage 3 hypothermia when Rose let go, and because he sank instead of floated, he was in fact alive. It was a fun little time sink. What rabbit holes have you done down recently?
I always have such a hard time with the 4th dimension concept. (Not the time one though, the other one) Sometimes I grasp it for a bit and then minutes later I’ll be confused again.