My most productive hours are after 4pm, when everyone else is gone or busy scrambling to finish things and get home. The assertion I disagree with is that this

My most productive hours are after 4pm, when everyone else is gone or busy scrambling to finish things and get home. The assertion I disagree with is that this is worse with an open office than a cubicle farm. In my experience cubicle farms are terrible because people don't see those around them that are being annoyed by an overly loud conversation.