June 1, 2019
I was chatting with my barber today about a job he worked in a few years ago. The owner of the barber shop - who had never cut hair - demanded a 20 minute turn around on each appointment. In that time the barber had to welcome the customer, offer (and make) them a beverage, cut their hair, and take payment. He explained to his boss that those timescales were infeasible; he needed at least 30 minutes to get the job done or quality would be compromised.
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