Expected Value (EV) tells you the AVERAGE profit/loss if you placed the same bet many times. It's the difference between betting smart and betting on feelings.
Only bet when EV > 0. Even high-confidence bets can have NEGATIVE EV if the odds aren't generous enough.
Move the sliders. Watch how a "high confidence" pick can still be a bad bet if the odds don't compensate.
A 70% confidence pick at -300 odds is a TERRIBLE bet. You need 75% to break even at -300.
A 40% confidence pick at +200 odds is a GREAT bet. You only need 33.3% to break even at +200.
+EV bets still lose 40-50% individually. The math wins over hundreds of bets, not one.