The deep union of ourselves with our inventions is not new. If a cyborg means a being that is part biological and part technological then we humans began as cyborgs, and still are. Our ancestors first chipped stone scrapers 2.5 million years ago to give themselves claws. By about 250,000 years ago they devised crude techniques for cooking, or pre-digesting, with fire. Cooking acts as a supplemental external stomach. Once humans acquired this artificial organ it permitted them to evolve smaller teeth and smaller jaw muscles and provided more kinds of stuff to eat. Our invention altered us.