It's only a ridiculous request because he didn't realise you were building a business.
I've made it clear what I'm building. I'm building a Bitcoin Island. And I've made it clear why I'm not entertaining endless stupid questions from investors:
So, why does it still have to be a secret at this point? Just write your plan/idea.
It will remain secret until there is an absolute certainty of it coming into fruition without being co-opted by the cheerleaders of big government, or some hedge fund aiming to sell Bitcoin out prematurely, like half of Bitcoin projects seem to have already been.