Prefix notation (ie. + 1 1) instead of infix notation (ie. 1 + 1) is much easier parse, as there are no precedence rules and you don't require different convent

Prefix notation (ie. + 1 1) instead of infix notation (ie. 1 + 1) is much easier parse, as there are no precedence rules and you don't require different conventions for expressions and function calls.