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> I see no reason what you just gave isnt isomorphic to

> sum(1,2,sum(3,4))

> Which is not "code as data"

Says who? In Prolog it would be. Whether or not some syntax is a data structure literal depends entirely on the syntax of your language. Your example is isomorphic if you make the corresponding change to your language's data structure literals.

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Well but that's my point. The given example doesn't take advantage of any code as data features. It's entirely user transparent whether code is data or not.

As a motivating example for why one should use lisp, or what lisp brings to the table, it's very poor, because it is wholly unmotivating and doesn't appear to demonstrate anything unique.

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