Have you ever noticed that good or evil refers to actions or thoughts and not to inanimate objects?
Tables don't fit on your scale. They don't think, they don't act. You want them to fit on it to preserve your idea that tree of knowledge of good and evil = tree of knowledge. Why do you think the writers of the scriptures didn't stop at ..of knowledge? Why specify good and evil?
By your logic, they couln't eat the apple because they didn't know what an apple is.