Powered by central systems with minimal control at the tenant level, typical spaces in office towers tend to be slower in responding to change. In many cases the spaces aren't designed to respond at all: fresh air is delivered according to estimates that have no correlation to how many people are actually in the offices. Indoor temperature adjusts slowly to outdoor changes while humidity and chemical off-gassing go completely unchecked. The end result is that these offices cost more. More precisely, slow response times cost more.