This answer is just not realistic in a lot of cases, and is immature in attitude. You might wish you could ‘let them sink’, but the reality is that you may *need* this person to get actual work accomplished (with quality level superior to ‘crap’) if, for example, he/she is charging hours to your project.

I agree. It’s an unpleasant fact of life, but somehow you have to learn how to work with and around dumb coworkers. When I’m in a more philosophical frame of mind I think of the story about the Buddha and his cook. Others were appalled at how difficult and disagreeable this person was and asked the Buddha why he…