Rule 28: Luck, good or bad, comes in bunches.

Any experienced, long-time gambler is familiar with the «bunching» of luck.
Play the same cards one night and they will be losers, while another night
they will be winners.
Both good cards and bad do come in bunches. It's important to realize
the В«typicalityВ» of this. It is within the bounds of probability that this occurs,
not outside of it. Many players think of it as an aberration – that such
occurrences are outside the framework of probability. They are not. They are
within the framework of it. (There is a point where they do become an
aberration, but this point is much farther along than most people would
guess.)