There is no certainty, only degrees of belief. I don't "know" that the world is round--I haven't seen it from space and I haven't circumnavigated the globe, an

There is no certainty, only degrees of belief. I don't "know" that the world is round--I haven't seen it from space and I haven't circumnavigated the globe, and I can't construct a proof. However, I'm "pretty damn sure" the world is round. If the human race restricted its belief to only those things it could be 100% sure of, we would still be in the Bronze Age. Similarly, I can't know that Buddhism can't levitate you off the ground and make you immortal, but I'm "pretty damn sure" it can't, and I wouldn't get any flack for saying so. There are many preconceptions I am comfortable letting go of, but not the ones I mentioned--at least not without extraordinary evidence.