Okay I watched this video. https://www.youtube.com/watch?v=PaFPbb66DxQ Guy seems to have based Sheldon vibes, but he just says people don't use abs because its mathematically tricky. Any particular reason for this? Seems like Abs would be easier.
The other thing is, using squares seems less accurate. Seems like it would give disproportionate weight to far away objects instead of just a consistent weight based on a linear distance. And I've shown in another thread that Ordinary Least Squares has flaws (for vertical type lines). Someone said Total Least Squares is better, but I don't know much about that.
Then I started to wonder...what about circles? Wouldn't distance based on some kind of circle method be the most accurate?
Or the other method, that doesn't use circles, somehow gets the perpendicular vector of the line. But the problem with that is first you have to know the line, in order to get the perpendicular vector.
@Lulu I just learned about Least Squares since a few days ago so I'm not sure about any of this.