Occasionally, we catch glimpses of what the future might hold. We read of Jeffrey, Leslie, and their son Derek preparing to become the first “cyborg family” with microchips storing medical information injected into their arms. We hear of a drug that may become the next Prozac or Viagra, as it promises to give human beings the ability to fend off sleep for almost two days, with virtually no effects of drowsiness or fatigue. Scientists speak of downloading human consciousness onto hard drives and of genetic materials being moved across species boundaries. These are just a few of the growing number of “posthuman” technologies that suggest new horizons of human capability.