It's also very good specific advice. Investor opinions are signals created by an active market. Think of them as guesses about the number of jellybeans in the

It's also very good specific advice. Investor opinions are signals created by an active market. Think of them as guesses about the number of jellybeans in the jar (by people trying to win a prize). The guesses in aggregate will be right, generally speaking. Having professional jelly-bean-guessers doing it all day long makes their individual guesses a little bit more accurate but makes the aggregate guesses work pretty well. (Source: raising angel and VC rounds, getting feedback some of which I didn't want to hear, and then watching it come true as I slogged through the issues that were not only foreseen but described to me ... albeit in aggregate from the investor market.)