I agree, that knowledge workers usually work until the work is done. But 16 lost minutes from DST, or half-an-hour on YouTube, has a cost. It may not affect whether the work is done, but it probably does affect the quality of the work done. It's a zero-sum game, and something's gotta give - either work quality or quantity has to decrease, or else time spent on work has to increase.

But it's a good question to ask. Maybe Tony & Co can tell us whether workers make up for this loss over the course of the week.