IF your ideas are not constantly put under scrutiny, how do you know they are sound and valid?
As I said, it's a bit of a conundrum, and I for one, have been very much on the side of questioning my own ideas more than anyone else would.
However, as I said, I have come to the conclusion, alas only recently, that that may not be such a good idea.
To answer your question: the world will tell you.
On the other hand, ideas are in a competition. If you put most of your energy into falsifying yours, they will lose out against ideas that are ruthlessly championed regardless of merit. (I think we can agree that the best ideas don't automatically win).
So it's a bit of a pickle.