> Why is the second set of parens necessary? it distinguishes the bindings from the body. strictly speaking there's a more direct translation using `setq` whi

> Why is the second set of parens necessary? it distinguishes the bindings from the body. strictly speaking there's a more direct translation using `setq` which is more analogous to variable assignment in C/Python than the `let` binding, but `let` is idiomatic in lisps and closures in C/Python aren't really distinguished from functions.