xkr writes: Professor Craig Hogan, at Fermilab, says the universe is filled with intrinsic jitter. This jitter comes not from quantum physics, but rather space is made of "tiny chunks." "Hogan's noise would imply the universe is digital." So it appears we are in the Matrix after all, and the Matrix is a digital computer. His work is published in the Feb 2012 issue of Scientific American, available on line.