The "hi-lo" system is a method used in various contexts, such as finance and gaming, to manage risk and reward. In finance, it often refers to a strategy where investors bet on whether the price of an asset will go higher or lower within a specific timeframe. This approach allows for quick decision-making and can lead to significant gains or losses. In gaming, particularly in card games, "hi-lo" can refer to a betting system where players wager on whether the next card drawn will be higher or lower than the current card. This simple mechanic adds excitement and strategy to the game, making it accessible for players of all skill levels.