Lottery is a form of gambling in which people pay money to buy chances to win prizes such as cash and goods. It’s an old idea that has been used throughout history to raise money for both private and public projects. In the early days of the United States, colonial legislatures sanctioned lotteries to help finance everything from roads and canals to churches, colleges, and a militia for defense against attacks by the French.

When state lotteries first became popular in the US in the 1960s, they were sold as easy fundraising tools that would funnel millions into schools and other government programs. But after lottery revenues have grown for some time, they typically plateau and then begin to decline. Lotteries respond by introducing new games and increasing promotional efforts, often with the goal of keeping up or even expanding revenues.

In the end, however, the biggest problem with lottery games is that they dangle the prospect of instant riches to an audience with limited opportunities for upward mobility and financial security. The ugly underbelly is that many players lose more than they win, and they also tend to engage in magical thinking and unrealistic expectations that can harm their long-term financial health and well-being.

What’s more, when a state establishes a lottery, the policy choices that officials make in their initial years of operation are often quickly overtaken by the industry’s continuing evolution and by other factors such as public perceptions about compulsive gambling or the alleged regressive effect of lottery play on poorer households. Few, if any, states have a coherent “lottery policy” that addresses these issues.