Queues (or lines), the science about them, and logic. Here’s the optimal strategy:

  1. Pick the line that looks “best”
  2. Shortly after you have lined up the queue will grind to a halt for a while. You can either accept it, or…
  3. Go to 1

It is quite obvious that selecting acceptance in 2 is the winning strategy.

This post was prompted by my recent checkout experience on an IKEA expedition, but it really is quite universal for anywhere with any sort of queue with people in it.