In 2011 a team of researchers at CERN near Geneva sent a beam of neutrinos on a 730-kilometer journey to Gran Sasso National Laboratory in L'Aquila, Italy. When the researchers clocked that trip, it appeared as though the neutrinos had somehow surpassed the speed of light in a vacuum. How did the scientific community respond to this surprising result? Almost everyone, rather than abandoning the well-established teachings of Albert Einstein—who said that nothing travels faster than light—argued that the researchers' measurements had to be wrong (as, indeed, they turned out to be).