Functional programming also emphasizes function composition. Especially anything that takes its intellectual heritage from John Backus. (viz, not lisp.) His sem

Functional programming also emphasizes function composition. Especially anything that takes its intellectual heritage from John Backus. (viz, not lisp.) His seminal paper on the subject emphasized that, in well-designed functional languages, functions take only a single argument, because that's necessary to support a good composition-oriented programming style. I think the root of the distinction is more about how you achieve that composition: Does it smell more like Alonzo Church or Alan Turing?