On a recent episode of the long-running trivia show, guest host George Stephanopoulos offered up a clue from the "Time For Science" category about the discoveries of famed astronomer Percival Lowell and, turns out, the winning answer wasn't entirely accurate. "Percival Lowell thought he saw these on the surface of Venus — some think it was a reflection of the blood vessels in his eye," Stephanopoulos said, to which defending champion Tyler Vandenberg, responded, "What are canals?" That appeared to be the winning answer as the Washington D.C. Marine scored $1,600 for the trivia question, but Twitter had something else to say. A