Imagine the person next to you isn't in a hurry, but you are. It's a very frustrating situation, but it can be resolved somehow. You can talk to them and make them hurry, or you can go your separate ways.

But the situation where the other person isn't in a hurry—and by "other person" I mean the person who will handle your business—but you are in a hurry, creates a completely different level of frustration.

For example, it's frustrating when you can't stand still in line because you're in a hurry, but the cashier is very slow.

Don't you think so?