system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 - How does a dishwasher save more water by being on for hours compared to hand washing dishes?
gpt
It sprays the dishes with water for a minute or two and doesn't drain it. It then recycles that water to continue spraying the dishes over and over. It then uses fresh water to rinse them off. When people wash dishes by hand they often just leave the water running which winds up using more water.