A lottery is a form of gambling in which numbers are drawn at random for prizes. Some governments outlaw lotteries, while others endorse them or regulate them. The casting of lots has a long history in human society, although the lottery as a mechanism for material gain is only moderately ancient. Its early use in the West traces back to the 15th century, with town records from Ghent, Utrecht, and Bruges mentioning lottery draws to raise funds for repairs to walls and town fortifications as well as to help poor people.

State-sponsored lotteries operate as businesses, and like other businesses they must maximize revenues to survive. To do so, they must advertise to persuade the public to buy tickets. This involves presenting misleading information (especially about the odds of winning the big jackpot); inflating the value of the money won (since a large prize is paid out in small annual installments for years, inflation dramatically reduces the present value); and appealing to emotions.

A lot of the advertising for the lottery is slick and colorful, aiming to create a sense of adventure, excitement, and wealth. Its main message, however, is that there are a lot of people who plain old like to gamble and the lottery is one way to do it. This may appeal to a certain inextricable human impulse, but it glosses over the fact that lotteries promote gambling at the expense of the poor and problem gamblers.