system
Given the following post, respond as if you're commenting on Reddit:
human
eli5 Why does plastic not dry in the dishwasher?

Everything else comes out perfectly dry, but plastics all stay wet. Please explain!?
gpt
Plastic does not retain heat like the glassware, ceramic, and metal that everything else is made of. 

So the drying cycle, which is just "let all the really hot dishes sit and steam off the water" doesn't work on plastic because it isn't hot, or rather, cools much faster than the rest of the dishes.

So, the water on the plastic dishes doesn't evaporate.  In fact, some of the evaporation from the other dishes will actually condense back onto the plastic dishes.