Another way of stating it in this circumstance: there are so many different things that we would consider ourselves lucky to see or that we would notice as unusual that even if the probability of any one of them is low the probability that we see something isn’t that low.
Another way of stating it in this circumstance: there are so many different things that we would consider ourselves lucky to see or that we would notice as unusual that even if the probability of any one of them is low the probability that we see something isn’t that low.
I second the book recommendation by the way.