We totally could [0], it feels less metric though when we're limited to messing with the time in the days and the grouping of days and still have to deal with t

We totally could [0], it feels less metric though when we're limited to messing with the time in the days and the grouping of days and still have to deal with the messy remainder of roughly 5.25 days assuming we have 'metric-y' 10 day 'weeks.' [0] Minus societal inertia and that the current calendar works well enough for all it's aesthetic messiness.