Sharon Lee, one-half of the couple who writes the Liaden Universe books (I’ve only read the first one, but I like!):

For instance, I, the Writer, do not agree to:
1) never kill off a beloved character
2) always provide a H(appy) E(ver) A(fter) ending
3) always write the same book
4) always write the same kind of book

You, the Reader, do not agree to:
#adore everything I write
#finish reading a book that doesn’t work for you
#buy a book in a genre you loathe, just because I wrote it

The rest of it is here.

I’ve nothing else to say except, “I agree! I agree! I agree!” Now back to the textbooks.