4:28 PM
"When they tried to fit the puzzle pieces together, however, they wouldn’t join properly—the warp and weft threads didn’t run smoothly from one tile to the next. The differences were vast. It was as if a tapestry had not been the same object from one moment to the next as it was being photographed...

David, in exasperation, called up Barbara Bridgers. “Somebody has been fooling around with these numbers,” he said to her... (He) informed her that the brothers would need to obtain the complete set of raw data. The next day, he went to the museum and collected two large blue Metropolitan Museum shopping bags stuffed with more than two hundred CDs...

There were at least a hundred billion numbers in the shopping bags."

"Capturing the Unicorn", the story of two brothers who built a supercomputer in their apartment, and how they helped solved the mystery of reassembling a medeval tapestry. (via MathPuzzles.com)