I disagree. If car and cdr and cons are bad, it's because they don't look or sound like what they do, and they have good replacements, like first and rest. de

I disagree. If car and cdr and cons are bad, it's because they don't look or sound like what they do, and they have good replacements, like first and rest. defn is a macro that makes it simpler to def, which sounds and looks like "define", a binding to a fn, which sounds and looks like "function". I don't think you get any clearer than that without writing "define-function" everywhere. And I don't want to write "define-function" everywhere. Do you think that every index variable in a loop should be called "index"?