November 28th, 2005 - Open Knowledge
Nov. 28th, 2005
Why Crunch Mode Doesn't Work: 6 Lessons
There's a bottom-line reason most industries gave up crunch mode over 75 years ago: It's the single most expensive way there is to get the work done.
by Evan Robinson
When used long-term, Crunch Mode slows development and creates more bugs when compared with 40-hour weeks.
More than a century of studies show that long-term useful worker output is maximized near a five-day, 40-hour workweek. Productivity drops immediately upon starting overtime and continues to drop until, at approximately eight 60-hour weeks, the total work done is the same as what would have been done in eight 40-hour weeks.
In the short term, working over 21 hours continuously is equivalent to being legally drunk. Longer periods of continuous work drastically reduce cognitive function and increase the chance of catastrophic error. In both the short- and long-term, reducing sleep hours as little as one hour nightly can result in a severe decrease in cognitive ability, sometimes without workers perceiving the decrease.
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05:19 pm - Map my run
05:23 pm - Exercise log
I normally "run" from my office (at the intersection of West Millbrook and Dixon Drive) around Shelly lake and back (a distance of about 3.75 miles. And by "run" I mean, I walk most of the way, with spurts of running.
Today, I ran all the way, with only two stops (at an intersection). I'm dripping with sweat and breathing hard, but I feel good.
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