In science one tries to tell people, in such a way as to be understood by everyone, something that no one ever knew before. But in poetry, it's the exact opposite.
The years of peak mental activity are undoubtedly between the ages of four and eighteen. At four we know all the questions, at eighteen all the answers.
I'm always amazed to hear of air crash victims so badly mutilated that they have to be identified by their dental records. What I can't understand is, if they don't know who you are, how do they know who your dentist is?