[kazinator]

> it makes sense to use a different pair of symbols to make parameter lists stand out more.

Quite simply, no, it doesn't.

> you don't personally like it because it breaks with tradition.

Nope! I don't impersonally like it, because it's a gratuitous inconsistency which doesn't do anything. It's not technically justified in any way.

How does it make sense to have the formal parameter stand out? Why don't we want the function body to stand out? (fn (a b) [+ a b])?

Don't the parameters already stand out by being on their own line (usually)?

   (defn (a b)  ;; <-- sticks out like sore thumb
     ...) 

If you think something deserves to stand out in code, can't you teach your editor to highlight it?

Where are the numbers to back all this "sense"?