My three year old daughter taught me that causation is subjective.
Example:There are three cookies so you like cookies.
You have to eat these cookies because there are three of them.If you don't eat these cookies that means you don't get them.If you give your cookies to me then I can't have your cookies.If you give me your cookies it is because there are three of them.If you give me your cookies then that is because they are mine.I like cookies because I have them. If I give you mine its because I can't give you mine. If I eat mine its because I have to play. Cookies are yummy because I am playing.