> So you haven't watched the video and yet make a false conclusion. Okay. I didn't say anything about the video. You're projecting. I found the written version here(https://everydayastronaut.com/why-do-cylindrical-rockets-roll/). > This is a map of downtown Waterloo, Iowa. Notice that the streets run NE to SW and NW to SE and are aligned to the river and not true north. When walking around, it’s unlikely that you wouldn’t redefine your own coordinates and start thinking of anything on this side of the river as north and this side as south. This is retarded as fuck. I work in a city where the streets run NE-SW and it drives me fucking bonkers when people refer to the streets as running N-S. "Go north on Elm and turn west on Birch" does not compute when they really mean "Go northeast on Elm and turn northwest on Birch." I suspect this is a difference between people who think graphically vs. people who think verbally. I always have a mental map of where I'm navigating and north is always at the top, just like if you were looking at a paper map. Getting back to the rockets. The tl;dr is "a lot of reasons depending on the vehicle, and some don't roll."