Why buy ECC RAM? This is a discussion I’ve seen many times. I’ve always heard that without the error checking, you can’t tell if a random bit was flipped by a cosmic particle. That seems like a very remote threat. Over the last week, I went to Science North in Sudbury, Canada, and saw the Diffusion Cloud Chamber. I took a photo myself. Both of those picture represent an instant in time, and each of those squiggles in the chamber in that instant represents some particle zipping through space that miiiiiight scramble your RAM. That’s… a lot more common than I thought.