Another great Veritasium video. I got to meek Derek at ScienceOnline this past week, and we were in the same dinner group one night but ended up at opposite ends of the table, so I didn’t get to chat as much as I would have liked.

The video shows a great example of how scientists have to not trick themselves by only doing tests that would confirm the mechanism of their hypothesis. You have to see if some other mechanism would work as well.