system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do recycling factories deal with the problem of people putting things in the wrong bins?
gpt
Sometimes they don't- they can just send the whole load to the landfill instead of processing it if there's excessive trash contamination. 

But recycling facilities usually employ either humans to stand on the conveyor lines and separate recyclables from trash, or automated equipment that does the same thing.