I was surprised to find so much discussion around the concept of the 15-20 hour actual productive week here, because Hacker News is such a startup friendly envi

I was surprised to find so much discussion around the concept of the 15-20 hour actual productive week here, because Hacker News is such a startup friendly environment. I've often seriously questioned if I'm cut out for startups because of the relatively low number (much less than 40) of productive hours I put in when things are not pressing at regular jobs.