I was thinking about this and the guy could be somewhat on the level. If he is writing his own bot from scratch, it could be he's having trouble with figuring out a way to positivley identify face cards accurately so that the bot knows what cards are SHOWING (either pocket or board). Existing bots of course have already figured this out, but if writing one from scratch, it could be an issue that comes up during the development/testing process. Also, I've heard that some poker clients are involved in the shuffle process, i.e. each client cuts/shuffles the deck before a card is dealt, to ensure randomization and inclusion of entropy from a source other than the central server(s). Could be he's looking into a way to leverage that somehow to stack the deck. Don't know how successful that will be though.