"Some people are aware of another sort of thinking which... leads to those simple ideas that are obvious only after they have been thought of... the term 'lateral thinking' has been coined to describe this orther sort of thinking; 'vertical thinking' is used to denote the conventional logical process."

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It has long been a tradition among novel writers that a book must end by everybody getting just what they wanted, or if the conventional happy ending was impossible, then it must be a tragedy in which one or both should die. In real life very few of us get what we want, our tragedies don't kill us, but we go on living them year after year, carrying them with us like a scar on an old wound.

— Willa Cather