I spend much of my time doing calculations that are not too taxing on a modern computer. I set them up, start them, and work on
something else for anywhere from a few seconds to half an hour, then come back to look at the answers. At least, that's what usually
happens. Some days I mis-estimate what is
small, and halfway through the calculation my machine comes to a grinding halt
tiny computation eats all the available memory.
Today seems to be one of those days.