Originally Posted by OneHitWonder View Post
The longer you play, the greater the final or one-time variance which otherwise ruins the "professional gambler" (in one way or another, especially wrt profit). Only small losses can be thus recouped overall. Might take a while, but the trips will "get you out of the house" sans the usual subconscious dread.
Variance works both ways. You can also win large amounts. However, I am also a believer in only bringing a set amount to the casino to avoid potentially large losses. More for the mental aspect than anything mathematical.