3. “Your goal … is to make something users love… This is
critical – think about the really successful companies of
today. They all started with a product that their early
users loved so much they told other people about it.
If you fail to do this, you will fail. If you deceive yourself
and think your users love your product when they don’t,
you will still fail.”
Y Combinator Startup Playbook
http://playbook.samaltman.com