Fish

Imagine that you want to catch some fish, but all you see before you is dry sand. It hasn’t rained in some time, and there is no sign of life. Now imagine that you also have a large tanker truck of water. So you pump the water out of the tanker and let it run into a depression in the sand. Let’s say it takes you ten minutes to shut off the water and pull a net from the front seat. By the time you get to the small pool you’ve created, you can net fish.