A few weeks ago, I got invited to a networking event. For the first hour, there would be an open bar. Of course, there was no liquor, which is my weapon of choice, but red wine would do. I needed to meet people.

The end of the hour drew near. I made my way back to the bar. The bartender had gone missing, but I noticed two glasses by the register—a glass of red and a glass of white.

A friend drew my attention. By the time the conversation ended, the hour had passed. The bartender asked for my credit card. I spotted the two glasses still there.