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

Trains, train parts, or something otherwise closely related to trains 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.

• Update 2025-02-01 (PST) (AI summary of creator comment): - Market closing date extended: The market will remain open for a few more months beyond the original closing date.

  • Resolution condition: If no Q&A video addressing train questions is available by the extended deadline, the market will be resolved as N/A.