The Cosmos’ Attack on Computers

In 1984, IBM encountered a mystery: computers in Denver were making ten times more unexplained mistakes than the national average. The operators of the computers kept reporting memory errors, but whenever they sent a memory unit back to IBM, the company could find nothing physically wrong. Why wouldn’t computers work properly in Denver?

For several years, the operators had to work around the fact that their computers would occasionally just forget things. It was almost like the computers were high – which, it turned out, was precisely the problem. At 5,280 feet, computers in Denver are much more susceptible to an unlikely culprit: cosmic rays. Continue reading