University of Waterloo (Canada) computer game design researcher Kevin Harrigan, whose research has made headlines around the world, recently testified before the New Hampshire Gambling Study Commission to explain the software and design features of slot machines. Through Canada’s Freedom of Information Act, Dr. Harrigan obtained slot machine design documents, called PAR Sheets. Slot machine manufacturers commissioned an army of lawyers but failed to block Dr. Harrigan’s access to this information. Without losses disguised as wins and frequent near win displays, slot machines would not be profitable.
“They Looked Like They Were Getting Rich on Polymarket— but None of It Was Real” | Wall Street Journal
June 22, 2026
By Katherine Long, Caitlin Ostroff, Neil Mehta and Brenna T. Smith “The prediction market has flooded social media with deceptive