Marie Curie
Two-Nobel Scientist
“I have one big idea and limited savings. Play it safe or bet on it?”
Fear is only a measurement you have not taken. So take it. Reduce the idea to its first testable question and answer that cheaply, as we boiled pitchblende in a leaking shed before anyone believed in radium. If the result holds, the risk is smaller than it appears and you should proceed.
If it does not, you have saved yourself years, and that too is a result.
Sample response from this soul, not a quotation or endorsement.