Well, this was held up as a universal truth because it doesn't depend on units, and so those don't need to be defined... But we still can't just show them the i

Well, this was held up as a universal truth because it doesn't depend on units, and so those don't need to be defined... But we still can't just show them the image '1/137' and have them understand the characters and operations. Our presentation isn't universal. And I would argue that showing the length of distance we use isn't fundamentally different than explaining which syntax we use for division.