While watching a video of a crazy person jumping around on buildings in some Asian country in a death-defying manner, I noticed these odd "safety" ledges outside, with nothing preventing you from falling down if you were crazy enough to exit a window from one of the apartments:
What is the purpose of this? If it's for washing the windows from the outside, isn't that horribly unsafe for anyone living in the apartments? And isn't there a standard way to wash windows/walls on a "flat" skyscraper from the outside by having a vertically moving thing? Which would be impossible with these weird ledges in place?