Exactly - it knocks about 90% of systems out of the way quickly. Then, when you keep within actual table limits - you have to account for the bankroll. If something works but needs 200k to begin playing, it's not worth the time. The system has to fund itself with profits - minimal starting bankroll and reliable. If it's based on math your done (lol). If not, you can still make a profit for a long time using what works. The fog of ideas and systems where they can't even be played in a casino is a waste of time for everyone.