When you are truly living on the edge, walking on the moon, perhaps, or caught in the grip of extreme poverty–there's no room at all for error. It's a luxury you can't afford.
For the rest of us, though, there's a cushion. Being wrong isn't fatal, it's merely something we'd prefer to avoid. We have the privilege of being wrong. Not being wrong on purpose, of course, but wrong as a cost on the way to being right.
As you gain resources, the act of being wrong goes from being fatal to annoying to a precious opportunity, something that you've earned. You won't advance your cause or discover new truths if you're obsessed with being right all the time–and so the best way to compound your advantage and accomplish even more than you already have is to set out (with relish) to be as open to wrong as often as you can afford to be.