Urban trivia. In 1725 the working class areas of Tokyo had a population density of 68,807/km². Virtually not a single building over two floors. In the US, the most densely populated incorporated municipality is Guttenberg, New Jersey at 22,052/km². High rises aren't efficient. pic.twitter.com/wJjdhUhvzf

— Wrath Of Gnon (@wrathofgnon) October 3, 2019

No, high-rises are not. And they are very, very, very, very, very expensive to build and maintain. Something like an order of magnitude more (even comparing floor-by-floor) than low-rise buildings, and it goes up a lot (forgot how much) as the height increases. Almost all of them are vanity projects that will not survive climate change. Anything over 10 floors in almost all places is likely doomed, especially if it’s built with a glass exterior.