Randall Monroe in one of the footnotes of What If? 2 mentioned that one light-nanosecond is very close to one foot (11.8 in vs. 12 in), and "propose" that we sh

Randall Monroe in one of the footnotes of What If? 2 mentioned that one light-nanosecond is very close to one foot (11.8 in vs. 12 in), and "propose" that we should just redefine foot as the same as light-nanosecond.