When I was in Cairo for work, the amount of people flowing out of their homes at dusk was unreal. Areas that were literally dead an hour earlier, became bustling with humanity.

When I left, I thought it was so stupid to build these big offices near the desert and to pack them full of people working 9 to 5 with massive amounts of aircon, effectively imposing on them the Northern European way of life - folks have been inhabiting those areas for millennia, they know how to properly deal with the environment they live in, let them work at night instead and save all that energy.