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"Does anyone give a shit about your dumb idea?" should be a bumper sticker/everyday growl reminder/alarm sound/first question of the YC app.<p>The graphic from the homepage of www.ABtest.com is also pretty self-explanatory about A/B.

David does a great job of pointing out a mistake people make when interpreting the Lean Startup philosophy. It isn't about optimization, its about validating basic assumptions.

This presentation can basically be summed up as a verbal kick up the ass - "JFDI". For that, it's useful - beyond that, I feel it's much too shallow for the HN audience (we know this stuff... we've read Steve Blank, we're looking for more nitty gritty details).

I have a question does the churn rate he talks about (less than .8% of users stay more than a year) apply to startups aimed at business critical applications like inventory control etc.?<p>I do know that most business "software" is horrendously underused, but does anyone know the actual churn rates? Also does it vary for desktop applications? If so what types and why?

Could anyone at the talk explain the three charts on slide 62? What are they representing?

Nice presentation, keeps it very simple. Oddly enough I signed up for his other startup performable the other day, seems his whole startup is oriented around helping you do this lol.

This is such a great presentation. Thank you, David!

is there a video link to the presentation?

This is a seriously awesome deck!

I should have stopped reading the presentation when he said reading is useless!