During the 1980s, Pepsi-Cola ran a series of television advertisements showing people participating in taste tests demonstrating that, according to the commercials, "fifty percent of the participants who said they preferred Coke actually chose the Pepsi." Statisticians pointed out the problematic nature of a 50/50 result: most likely, the taste tests showed that in blind tests, most people cannot tell the difference between Pepsi and Coke. Coca-Cola ran ads to combat Pepsi's ads in an incident sometimes referred to as the cola wars; one of Coke's ads compared the so-called Pepsi challenge to two chimpanzees deciding which tennis ball was furrier.