Today’s Globe carries the obituary of Ken Olsen, the founder of Digital. I never met Olsen and never worked at DEC, but the story reminded me of the glory days of the computer industry in Massachusetts in the 1980s with Digital and Wang serving as the global leaders in that field. The history of the rise and fall of those two companies and all the local spin-offs they created, will be a fascinating story. My own view is that they bet everything on proprietary systems that sought to prevail at the expense of everyone else. In the end, open systems and interoperability prevailed.