Number 128 (Story #4), May 11, 1993 by Phillip F. Schewe and Ben Stein PREDICTIONS OF RATIOS OF CERTAIN HADRON MASSES based on lattice gauge theory and more than a year's worth of supercomputer time have come within 6% of the observed values (F. Butler et al., 10 May Physical Review Letters). Donald Weingarten and his colleagues at the IBM Watson Research Center used a computer configuration that employed from 384 to 480 parallel processors with speeds of 5 to 7 Gflops (billion operations per second). In lattice theory simulations, the interactions among quarks inside hadrons (particles that are made of quarks) are depicted as taking place in a jungle-gym-like space-time world where quarks sit at fixed nodes. Weingarten believes that numerically-derived results like his will constitute a legitimate adjunct to rigorous theoretical calculations and experimental evidence. (The New York Times, 11 May 1993.)