Flashback to the late 1970s, when this regional insurance company's data center is all about its mainframe, according to a pilot fish on the scene.

"My team was developing an agency software package to be run on a minicomputer," fish says. "But due to lack of space, our desks were in the computer room.

"For about a week, IBM techs had been coming out and working on one of the big tape drives -- the ones with the vacuum columns on both sides. Apparently, the system was getting errors when running the night batch jobs. They ran diagnostic after diagnostic, but couldn't find any reason for the errors.

"Now, it just so happened that one of the senior IBM hardware guys was kind of dating one of the mainframe programmers. He stopped by to get her for lunch one day while the techs were there. He asked what they were doing and they explained.

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