anyway no fun with broken code =)

There is a global property that holds the key.

Search for global values and you will see.

The description didn't say not to overwrite a falsey value. It said not to redefine an existing namespace.

How can you find that what you need is named 'theWire'?

(except 'CutTheWire.toString()')

I understand your concern about falsy values, but this does not fix this (unlikely) scenario. In case MyNamespace is 0 (or any other primitive value) your code would fail on this line:

MyNamespace.MyClass.prototype.sayHello = function () { return this.string; }

Since MyClass reference will be discarded right after the number is coerced to an object. Another example below:

var n = 0;
n.MyClass = function(){}
n.MyClass.prototype.sayHello = function(){} //TypeError: Cannot read property 'prototype' of undefined

Yet is the most voted answer, I don't understand it either.

Solution is wrong. doesn't work with )) )))) etc.

Hmm nice trick using nested ?: exps

Why ^ 0 ?