I think that that assertion is a load of crap.
While, to the best of our understanding, nature is a probabilistic system, we can definitely assign >99.999999999999% probabilities to many events, which is good enough to "know" that they will happen. So the whole discussion is a waste of time and meaningless, just like you don't think of Kim Jong Un personally coming into your house and suffocating you in a wrestling match or you winning the lottery 5 times in a row.
I know with >99% probability that the Earth is round, that 2+2 = 4, that space is mostly straight, etc... Appeal to ignorance is fallacious.