Prediction markets, a specific prediction market, or something related to prediction markets must be a main subject of the question, not just an offhand reference.

The question must be one asked by someone else in the Q&A, not a question posed by CGP Grey themselves. It must be featured in the Q&A video, not just asked in the submission forum. In the event there are multiple videos that are all part of the same conceptual Q&A session, I'll count all of them that are on the main channel.

https://www.youtube.com/watch?v=AnHF0R8qd3M