[just6979]

"From the first lab studies it became clear that we needed a baseline with Windows 3.1, to better understand what problems existed prior to Windows 95 and what problems were unique to the new design."

This could be the biggest takeaway: iterating without a goal is silly. Though, honestly, it should be the default. If you're creating a new paradigm without ever knowing the problems you're supposed to fixing, you're doing it wrong!