Another point, the output of a slot is not purely noise, instead it's telling you a story of how it works with your particular strategy. An example for video poker: players should definitely at least track their straight flushes. If you're not getting the straight flushes you expected, it might not be just random noise, instead it might be you're missing some of the straight flush draws, which is easy to do in the poorly lighted and highly distracting arena of the casino. If you're missing some straight flush draws, that will show up in your results eventually. If you're real detailed in your tracking (there must be an ap for that, right?), you might notice a machine that does poorly for you, then if you go back and check that machine, you might find something wrong with it, such as sticky or bouncy keys or a spot light right on it that reflects into your eyes causing eye fatigue so you mistake a spade for a club and so on.
