Each skyscraper should have one or more playground-style spiral slides installed that can be ridden directly to the bottom in the event of an emergency. This wo

Each skyscraper should have one or more playground-style spiral slides installed that can be ridden directly to the bottom in the event of an emergency. This would also provide a valuable source of fun to the building occupants. That would be pretty dumb in reality, but I wonder if it could be made to work... you'd need some kind of synchronisation control on the ingress to ensure people enter the slide with sufficient clearance before/ahead of them, and you'd have to have a "mantrap" type arrangement at the ingress points to prevent multiple people cramming in at once and risking a jam. You'd also want to neck the entrances down to about 3/4 of the tunnel diameter to stop overly large persons from entering the slide. Probably also want some kind of low-friction mat at the exit point so people aren't piling up at the bottom of the slide and blocking it if they can't move fast enough.