"if an electron was the size of the solar system, it would be out from being perfectly round by less than the width of a human hair" This doesn't seem right:

"if an electron was the size of the solar system, it would be out from being perfectly round by less than the width of a human hair" This doesn't seem right: Radius of an electron: 2.8e-15 m Off by: 1e-29 m Thus it's off by 0.0000000000004% Average distance of pluto from the sun: 5.9e12 m Thus "size" of the solar system: 1.18e13 m 1.18e13 * 0.0000000000004% = 4.2e-2 = 4.2cm It's not off by that much , but 4.2cm is way more than the width of a human hair (17-180um, a factor of ~1000-2000-fold)