Agreed, but still possible. Horses, dogs, red/black don't know your strike rate or your current run of in's/out's, but your subconscious does. It's easy to say "if I get a run of 10 losers, I'll do this or that". See how you feel when your bank has hit that many losers, confidence along with cash is gone, the mind takes over. Do you give up, or bet up?, surely it can't have 11, 12, 13 or 50 losers in a row. Why not?