Technology is advancing so quickly that it won't be long before the era of performance-enhancing drugs seems like the athletic Stone Age. Injecting or ingesting chemicals will be considered primitive when athletes will have the ability to have robotic cells powered by software coursing through their veins.

That might sound like science fiction, but such technology is already being developed, and eventually it will change the competitive landscape of sports. Futurist Ray Kurzweil explains how man will mesh with machine:

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