"Imagination is an intangible, unlimited, and free resource. It is not, at least for the purposes of this discussion, the same as fantasy, where universal laws cease to apply, where elephants might speak Latin or humans travel back in time. Nor is imagination reserved for artistic pursuits, though imagination is the core of creativity. Applying imagination to problem-solving requires the ability to come up with an idea, and to break that idea down into the steps that will bring it to fruition. It also requires an alchemical mix of will, vision, discipline, and action, not to mention stubborn perseverance in the face of frustration or opposition."