Writing a good non-fiction book

[mapgirl]

What characteristics do you think a good non-fiction book should have or should avoid?

[zoolane]

What characteristics do you think a good non-fiction book should have or should avoid?

Have I would said stick to fact as much you can but maybe add fiction to bring to life or sound more like story or flow better.

[YesNo]

Clarity. Accuracy. When I read non-fiction, I need to feel that I am getting a better understanding of whatever the subject matter is otherwise I will look for a different text on the subject.