amazing that they could not figure out how to exploit the AI, even though we were showing them the hands that the bot was playing every single time and the bot strategy wasn't really changing that much between days. All right, so I think exploitability is extremely important. I think has been overlooked by the AI community, and this is telling that the imperfect information game solving community has focused on throughout its existence. All right, so now, I want to get to the example of why imperfect information games are hard.