Unlike your baseball player and your prizefighter and your matador, how does a writer retire? No one accepts that his legs are shot or the whiplash gone from his reflexes. Everywhere he goes, he hears the same damn question: what are you working on?
Those cats all over Key West have nothing to do with Hemingway.
The devil, you say.
Young writers often confuse dialogue with conversation, under the assumption that the closer you get to reality, the more convincing you sound. But dialogue is not conversation. Dialogue is a construct; it is artificial; it is much more efficient and believable than real conversation. Just as fiction itself distorts reality in order to achieve a larger truth, so dialogue eliminates all the false starts and irrelevant intrusions of real life in order to reveal character and move the encounter toward a dramatic conclusion.