Being a collector of ancient machines, it's quite amazing what kind of stuff is left on the things. Perhaps half of the computers I've bought from eBay have at least had full versions of applications on them, a few have had the complete formatting done, but there's still many with every document (Word, textedit, simpletext, excel, pagemaker, xpress, whatever) the owner could fit on the drive left there for open viewing. Resumes, personal letters, school assignments - the lot.
It's rather interesting to look at the file creation dates of the files on one machine, & see the whole history of its install, from new to the last couple of years when it stopped being used, especially 68000s, cos of the age

dana
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