> Can you give an example of code that is improved by let significantly? "Let" is one of the most important special operators in Lisp. It allows you to create

> Can you give an example of code that is improved by let significantly? "Let" is one of the most important special operators in Lisp. It allows you to create lexical variables within an s-expression. Roughly equivalent to creating local variables within a block (in other languages). So i'd claim it is essential.