I worked as an Electronic Technician in a department that had a large computer room full of mainframe computers, disk drives, & 9 track reel to reel tape drives and such. Once we had a power outage and everyone is sitting around waiting for the power to come back on. After about 1/2 hour of sitting in the dark, this clueless gal comes into the tech lab to report that her tape drive won't work. As Bill Engvall would say, Here's your sign!