At first glance, Joan R. Ginther's story sounds almost too extraordinary to be true. The American mathematician, who earned a doctorate in statistics from Stanford University, won four major Texas Lottery prizes between 1993 and 2010, collecting more than $20 million in total. Her repeated success quickly sparked speculation that she had discovered a mathematical way to beat the odds, with many online claiming she had "cracked the lottery algorithm". While those theories continue to circulate, no evidence has ever shown that Ginther manipulated or reverse-engineered the Texas Lottery. Instead, her remarkable streak remains one of the biggest mysteries in modern lottery history.
How a Stanford PhD in mathematics won the lottery four times