socrates is dies, the exploited is not dies.

hello_world.js

Object.generate = Object.generate ? Object.generate : function(proto) {
  function F() {}
  if (!proto) {
    return F;
  }
  if (typeof proto === 'function') {
    F.prototype = new proto();
    return F;
  }
  if (typeof proto === 'object' && proto.constructor === Object) {
    F.prototype = proto;
    return new F();
  }
  return proto;
};

(function(global) {

  var Human = global.Object.generate();
  Human.prototype.isHuman = function() {
    return this instanceof Human;
  };
  Human.prototype.isDies = function() {
    return true;
  };

  var Philosopher = global.Object.generate(Human);
  Philosopher.prototype.isPhilosopher = function() {
    return this instanceof Philosopher;
  };
  Philosopher.prototype.isDies = function() {
    return this.isHuman() && Human.prototype.isDies.call(this);
  };

  var Punk = global.Object.generate(Philosopher);
  Punk.prototype.isPunk = function() {
    return this instanceof Punk;
  };
  Punk.prototype.isDies = function() {
    return false;
  };

  Philosopher.prototype.isPunk = function() {
    return this instanceof Punk;
  };

  // ======================================

  console.log('=== Human ===');

  var aHuman = new Human();

  console.log(aHuman.isDies());

  console.log('=== Philosopher ===');

  var aPhilosopher = new Philosopher();

  console.log(aPhilosopher.isHuman());
  console.log(aPhilosopher.isPhilosopher());
  console.log(aPhilosopher.isDies());

  console.log('=== Punk ===');

  var aPunk = new Punk();

  console.log(aPunk.isPhilosopher());
  console.log(aPunk.isPunk());
  console.log(aPunk.isDies());

  console.log('=== Socrates ===');

  var socrates = new Philosopher();

  console.log(socrates.isHuman());
  console.log(socrates.isPhilosopher());
  console.log(socrates.isPunk());
  console.log(socrates.isDies());

  console.log('=== THE EXPLOITED ===');

  var exploited = new Punk();

  console.log(exploited.isHuman());
  console.log(exploited.isPhilosopher());
  console.log(exploited.isPunk());
  console.log(exploited.isDies());

})(this);