Anecdote, but having spent years in an open office the amount of emailing and chat happening instead of talking skyrocketed as density increased.<p>Any time anyone spoke everyone else could hear the conversation, so discussions tended to be formal and short. No "how are the kids" or other pleasantries.<p>Meetings would drag on, if only for the added bit of privacy you had in conference rooms.<p>There were some benefits, but overall I'm not a fan of them.