As a founder I think the Playbook is mostly on point, I'm curious to see what Sam adds or removes in the re-write. Startups are hard and it takes a lot of persistence and hustle to move the needle in a meaningful way. I love the part in the Intro section "A word of warning about choosing to start a startup: It sucks! One of the most consistent pieces of feedback we get from YC founders is it’s harder than they could have ever imagined, because they didn’t have a framework for the sort of work and intensity a startup entails." Then the follow up line is great "On the other hand, starting a startup is not in fact very risky to your career—if you’re really good at technology, there will be job opportunities if you fail. I personally think the riskier option is having an idea or project you’re really passionate about and working at a safe, easy, unfulfilling job instead." - I totally agree with that, if you have an entrepreneurial character you'll forever regret not taking the chance.