That's a good point, too, one I failed to mention. A lot of people are losing poker players, but they don't know it. They don't keep records, and they don't manage and analyze their bankroll over time. A losing poker player has a negative EV. If you buy in to 20 $1000 tournaments, bink one of them for $15K, you're on top of the world, but guess what, you're a losing poker player. Cash players are even worse. They donk off $500 a night but only remember that time last week when they were up $5000 and cashed out. Congratulations, but your EV is still negative.

By my own measure, I was a losing poker player for most of my years playing the game, and I have a spreadsheet to prove it.