Immediately after, in rationale, how much easier the math is... "There is no AM or PM with metric time. Just 10 hours in the day. To get a good night sleep (8 s

Immediately after, in rationale, how much easier the math is... "There is no AM or PM with metric time. Just 10 hours in the day. To get a good night sleep (8 standard hours) you'd sleep for 3.33 metric hours." Author has committed the classic blunder of ignoring the utility of a base that can be divided evenly into halves, thirds, quarters, sixths, and twelfths. Turns out the ancients knew something about head math because they had to.