There are ninety-nine things you need to know:
Number one: There are more than ninety-nine things you need to know.
Number two: Nobody knows how many things there are to know.
Number three: It’s more than three.
Number four: There is no way of knowing how many things you need to
Number five: Some of the things you need to know are things you already know.
Number six: Some of the things you need to know are things you only think you know.
Number seven: Some of the things you need to know are things you used to know and then forgot.
Number eight: Some of the things you need to know are things you only thought you forgot and actually still know.
Number nine: Some of the things you need to know are things you know but don’t really know you know.
Number ten: Some of the things you need to know are things you don’t yet know you need to know.
Number eleven: Some of the things you think you need to know are things you probably don’t really need to know.
Number twelve: Some of the things you need to know are things known only by people you don’t know.
Number thirteen: Some of the things you need to know are things nobody knows.
Number fourteen: Some of the things you need to know are things that are unknowable.
Number fifteen: Some of the things you need to know are things that can only be imagined.
Number sixteen: At any time the list of things you need to know can be abruptly suspended.
Now you know.