It is considered unidiomatic in every Lisp I am aware of to orphan parens. To some degree this is a stylistic concern, but it's a much more open-and-shut case t

It is considered unidiomatic in every Lisp I am aware of to orphan parens. To some degree this is a stylistic concern, but it's a much more open-and-shut case than, say, C brace style.