Well Lisp can reflect on its objects! You can have code like: (int? foo) that returns #t or #f depending on if foo is an int. So `int?` needs to have informat

Well Lisp can reflect on its objects! You can have code like: (int? foo) that returns #t or #f depending on if foo is an int. So `int?` needs to have information from somewhere about what type of object it is. I get more into this in Part 4 (unary primitives). Thanks :)