House Edge
The mathematical advantage that the casino maintains over players in any given game. Expressed as a percentage, the house edge represents the average amount a player can expect to lose relative to their wagered amount over extended play. For example, a game with a 2% house edge means that for every $100 wagered, players lose an average of $2 over the long run. Understanding house edge is fundamental to evaluating betting systems, as no strategy can overcome this mathematical reality.