Patent trolling.

I would imagine there are a lot of challenges around converting high rise commercial buildings into housing. Many buildings only have a handful of toilets per floor, maybe a few sinks, and no showers. I’m also sure there are no gas lines in many of them (electric heating and cooking might suffice). But for sure, water delivery will be one of the biggest challenges.

Then there are even lame laws regarding parking requirements for a building with so many residents.

I suspect this holds true to any base x numbering where you take the highest valued digit and multiply it by any number. Try it with base 2 (1), 4 (3), 16 (F) or whatever.

We didn’t fight Nazi Germany because they were racist. We fought them because they attacked us (through their ally, Japan). The sad truth is there were a lot of Americans who were ok with Nazi ideology.