I wish I still had the links handy, but there's over a century's worth of research out there showing that it's a bad idea to go over 40 hours in a workweek for any extended period of time.
Of course, everyone's different, but I've noticed I have 4-6 hours of productive time in me per day for knowledge work (e.g. programming). I'm guessing I could get multiples of 4 provided there were long breaks in between, enjoyed what I was doing, and wasn't constantly being interrupted.
Perhaps this is true in a corporate environment, but some of the more productive periods in, say, open source development, or research, are pretty much whole life affairs. Einstein's Annus Mirabilis, for example.
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I wish I still had the links handy, but there's over a century's worth of research out there showing that it's a bad idea to go over 40 hours in a workweek for any extended period of time.
Of course, everyone's different, but I've noticed I have 4-6 hours of productive time in me per day for knowledge work (e.g. programming). I'm guessing I could get multiples of 4 provided there were long breaks in between, enjoyed what I was doing, and wasn't constantly being interrupted.
Perhaps this is true in a corporate environment, but some of the more productive periods in, say, open source development, or research, are pretty much whole life affairs. Einstein's Annus Mirabilis, for example.
No-one can sustain crunch time indefinitely.
I agree, but it's never crunchtime when curiosity drives you.