[Ishmaeli]

One of my biggest pet peeves is when I'm walking in a crowded area, and as I follow someone through a doorway or other transition space, they stop and look around.

The doorway or (whatever) is already a natural traffic bottleneck. And these people are making it worse by stopping right in the middle of it.

I suspect it's because of this psychological effect. But it's so annoying that many people's response seems to be to stop in their tracks. Okay maybe you've forgotten why you went through this doorway. But have you also suddenly forgotten that you're in the middle of a crowd of people trying to move around? Apparently so.