Mr. Buffet's system, if I may say so myself, is a variation of the Martingale system.

The Martingale system is when you double your previous bet if it lost, if it won, you bet your minimum bet. The general idea, is, that most of the time the Martingale player will win -- yes, MOST OF THE TIME, HE WILL COME OUT AHEAD. Given enough time, though, he will have a giant loss and will wipe him out {or if he doesn't get wiped out, the big loss will be, on average, just enough to put him in the red from his previous session profits}. If the Martingale player ends up ahead, at any point (well, generally something like 5 or 10 units), then he cashes out and is happy with his small win.

Likewise, Buffet did essentially the same thing, on a different scale. He would flat bet day #1 with $25 a hand. If day #1 was a loser, he would bet $50/hand on day #2. If day #2 was also a loser, then he'd bet $75/hand on day #3 [a "martingale" user would bet $100/hand, btw]. However, if he ever came out a winner, likely by $100 or $200, then he'd walk away, be happy with his small win, just like the martingale player.

Instead of increasing his bet after a HAND loss, he would increase his bet for a SESSION loss -- in the end, it's all the same thing, and will, end up losers.

There are 3 ways to beat casinos, none of which are certain:
1] Count cards or use some sort of "advantage" play.
2] Play until you're up any amount at all. Walk away. Never return.
3] Never walk into one -- although this isn't really 'winning' -- if you don't play, you can't lose. You know what they say, "A push is a win in my book!".