JoshuaZ comments on Harry Potter and the Methods of Rationality discussion thread, March 2015, chapter 119 - Less Wrong
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Comments (339)
Well, in seconds it's 234, which looks slightly less arbitrary.
Waait. Did whoever made it even use our time units?
Well, seconds have been used since the Babylonian time period. However, we also don't know how carefully Harry measured the recharge time.
Wikipedia disagrees: http://en.wikipedia.org/wiki/Second#Before_mechanical_clocks
There are a lot of older units of time listed there, but none of them seem to fit.
Huh. That's fascinating. I had apparently wrongly assumed that because it had the same division into 60 that it also was as old. Apparently not.
Carefully enough not to round it up to 3:55. Presumably, it's within a second.