Offices are a cost center and have their own set of inefficiencies. I think Mayer was correct in "correcting" an issue at Yahoo! which is that many employees were gaming it. There is a value in face-to-face connection. We can do away with offices as long as there are community spaces (public or private) where people can connect. There is good value in finding a balance between isolation time and collaboration time. Offices might tend towards collaboration time and lose out on isolation time, while the opposite is often true with strictly home offices.