I didn't mention perseverance because that seems like a given for a startup to be successful. I sure wasn't claiming that domain expertise allows you to be hal

I didn't mention perseverance because that seems like a given for a startup to be successful. I sure wasn't claiming that domain expertise allows you to be half-hearted in your efforts. Perseverance is necessary, but not sufficient. Perseverance and technical excellence, without domain expertise, seems like a road to failure.