It all depends on what you want to do with it. Crunch numbers? No way after some point. Prepare the Air Force's annual budget submission without information

It all depends on what you want to do with it. Crunch numbers? No way after some point. Prepare the Air Force's annual budget submission without information leaking? A real example of a perfect fit. Or provide the IT for MIT's EECS department? Good fit, until MIT-MULTICS was shut down as part of Honeywell killing Multics and the Cambridge lab which did work on it (I played a role in moving off that).