We all have an innate sense of what makes a good story. Even as children we can discern between what’s interesting, what’s interesting to just us, and what isn’t interesting at all. If a kid comes home and you ask him what happened at school today, nine times out of ten the answer will be, “Nothing.”
But sometimes the answer will be, “Charlie brought his pet tarantula to class and it got out of its cage and Mr Sellers screamed and jumped on the table and then he lost his balance and fell out of the window and broke his arm so now we have to have Miss Reedy for the rest of term.”
My point being not only that kids don’t seem to speak with any punctuation, but also that a kid knows when he’s got something to tell you. We all do. We all have the urge to find someone with whom to share a story when something remarkable happens.