In Lisp parentheses are used as a syntax for nested lists. Lisp programs then are written on top of that with a syntax, which is structural on top of lists. Mos

In Lisp parentheses are used as a syntax for nested lists. Lisp programs then are written on top of that with a syntax, which is structural on top of lists. Most other languages don't use a primitive data structure for encoding programs (other than text).