Bravo for the posting. When anyone proposes highrises as the answer to San Francisco, or any other city's urban problems consider that designs must change first:

A few years ago I had a conversation with the architect of the new downtown highrise I was living it. I had been trying to meet the neighbors and commented on how one couldn't see anyone's balcony near to your own given the shape of the building. He responded that modern buildings were designed to limit, or ideally, eliminate tenant interaction. Walkways are hidden so no one can see you enter or exit; balconies have privacy walls in between, etc. Interaction leads to conflict and conflict leads to management time and expense.

But lack of conflict only means harmony in a spreadsheet.