I was wandering through a retail store yesterday when I happened through the baby section. There was what the folks in manufacturing call a bottleneck–where things being what they are create a pinch point that slows or stops progress. In this instance the “things” were people, with carriages (sleighs?) loaded down with goodies, placed at angles in the aisle to optimize the stoppage of movement in both directions, while they chatted with animated voices and nonthreatening hand gestures.
No threatening hand gestures from the other shoppers who were being inconvenienced but that may have come later. I had no “sleigh” so I scooted around through children’s where I happened upon the cribs and baby monitors and that was when it occurred to me.