Nope, I no longer pay attention with certain patterns because I did that in the past, but instead of outsmart the casino, I find that the result is random, previous result had no effect to the next bet.
some times I did see it make a profit, and some times it didn't.
This is the most important part, since it's not consistent, don't believe in what he saying. If he really make money from gambling consistently, listen to him, his strategy might really work.
There's no point to spend more effort paying attention to the pattern when the result is same.