This seems intuitive with a little prior knowledge. When I learned how to load cargo airplanes, I was taught that you have to use dunnage to spread the weight

This seems intuitive with a little prior knowledge. When I learned how to load cargo airplanes, I was taught that you have to use dunnage to spread the weight of heavy objects across the floor of the plane to overcome specific weight limits in the floor. So if you have a 5 ton truck, you would need to use dunnage under each axle to distribute the load a bit so the whole 5 tons isn't focused on effectively 6 points the size of a sheet of paper. When adding the dunnage, we were taught to envision the weight spreading at 90 degrees from the axle centered downward in order to add the dunnage height to the total vehicle height during our load planning. More simply, I remember when I was a kid the local barbershop was vandalized with bb guns. The holes in the windows were tiny on the point of impact, but spread at nearly 90 degrees on exit. I am not claiming to know more than some anecdotal experiences here, and I may have drawn the wrong conclusions altogether. When I look at how force is typically distributed though, it seems to be regularly distributed in right angles. Poetically, I like to think how this is in direct opposition to the spirals one can find everywhere in nature. Yin and yang.