If the vast majority of ideas are bad and only a few ideas are good - this leads us to think about a market of ideas. Generally then the market is awash with ideas - this makes ideas cheap as there is plentiful supply. The only way to determine the value of the idea is to enact, to invest in the idea - but before this, when the ideas are on their own, they are cheap and plentiful and most will be lemons.<p>This is why I still believe that not telling anyone about your idea is likely to be a bad thing - stealth mode in general is not wise at the early stage before enactment. Why? Because most times these ideas are not worth much and you would benefit from the feedback from seeing how that idea fares in the public domain. This doesn&#x27;t invalidate the authors very good summary of how to find a good idea - and I don&#x27;t think the article was necessarily saying that ideas should be kept secret all the time either -  it&#x27;s just a related thought!