Advice about babies comes with large error bounds. It’s reassuring, up to a point. “Oh, that? Anything between three times a day and once a month is normal, yes.” “Aha, right - OK: sometimes there are three of them.” That sort of thing.
Memories are blurry. Asked to recall our earliest experience, most of us have vague recollections of some childhood incident. Facts, on the other hand, are sharp little points of knowledge. The Battle of Hastings took place in 1066. Alan Partridge’s middle name is Gordon.