If a person goes to the barber shop on January 1st, and again on February 1st, did they go 30 days w/o barber shop ?
... or 31? I was wondering, since your hair technically keeps growing. So if you get a haircut on January 1st at noon, do the second half of the 24 hours on January 1st count toward how long since you last went to the barber shop?
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