This kind of thing may not happen often but when it does it can cause errors which are very intermittent and impossible to diagnose. I have seen memory chips th

This kind of thing may not happen often but when it does it can cause errors which are very intermittent and impossible to diagnose. I have seen memory chips that will fail consistently, but only when running a specific program out of dozens of others tried. So it kind of looked like the program had a problem, except that it worked on other hardware.