Anyhow, it was on the DEC that I first learned the golden rule of email: black and white type does not convey your meaning, particularly when you're joking, sarcastic or whatever. (Early days of smileys.) All this reminiscing is triggered by the death of Ken Olsen, one of the cofounders of DEC.
It's a cautionary tale, matched in later days by the AOL/TimeWarner saga, Alta Vista, and maybe Yahoo, and Ebay. Who knows the future?