There is a bug in his code in the `Unsafe initialisation` section. He tries to access variables that are not defined in that scope. A linter would have caught t

There is a bug in his code in the `Unsafe initialisation` section. He tries to access variables that are not defined in that scope. A linter would have caught that. Javascript is like democracy. It works best when: - lots of people participate - we understand its warts - it's allowed to evolve - the powerful aren't allowed to write the rules