The idea of determining fates and allocating resources by lot has a long history, including several instances in the Bible. But the lottery is a relatively modern innovation, with the first state-sanctioned game beginning in New Hampshire in 1964. Lotteries have since gained widespread acceptance in American society, generating tens of billions of dollars annually and allowing governments to fund a variety of projects and services.

But it’s important to understand the mechanics of how a lottery works before jumping on the bandwagon (or, more precisely, throwing your money away). As a general rule, only about 50%-60% of the total prize pool goes to winnings. The rest is deducted for operating expenses, promotion, and profits for the lottery company or sponsors.

And that’s where the big problem lies. Lotteries are largely designed to be addictive, encouraging players to invest small sums for the chance to win big, even though the odds of winning are slim. This can cost Americans billions in foregone savings that could be used for retirement, education, or paying down debt.

Lottery revenues are also heavily reliant on a small segment of “super users.” According to Les Bernal, an anti-state-sponsored gambling activist, a lottery’s business model is “reliant on a few players who buy the most tickets and play the most games.” In other words, they’re the ones who make or break the system. And these are the people that lottery companies rely on to keep their advertising budgets high and the prize pools growing.