"The number of human deaths due to hardening of the arteries and other similar diseases suggests that human beings were not meant to eat animals; our bodies are unable to digest the animal fat effectively and it ends up stored in our blood vessels, not to mention our waist lines, buttocks and thighs!"

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There are actual communication systems being built to enable eye surgeons to get inside the eye, and vascular surgeons to get inside the arteries. You could see a social reaction in which people would want to regulate this technology because they are threatened by it, and thereby cause a lot of harm. There are several scenarios that are happening at once. The other scenario is that the Japanese are going for this in a big way.

— Howard Rheingold