4 Look what we can do!Products http//www.forbes.com/newsletter/2006/01/10/apple- nano-in_jw_0109soapbox.inl.html http//www.voyle.n et/Nano20Products202005/Main20Products2020052 0.htm 5 Look what we can do!Medical Advancements http//www.foresight.org/Nanomedicine/Gallery/inde x.html http//www7.nationalgeographic.com/ngm/0606 /feature4/gallery5.html 6 Concept Molecular Manufacturing
Desktop nanofactories will use molecular raw materials to build complete atomically precise products
http//www.lizardfire.com/html_nano/nano.html 7 Toxicity of Ultra-Fine Particles
Surface area to volume ratio
Smaller particles are more reactive
Smaller molecules are more toxic
Nanotechnology Risks Ethics and Law Hunt Mehta ed. 2006 8 Health Risks
---- Stable Not much worry ---- Mobile object of concern
http//en.wikipedia.org/wiki/NanotechnologyRisks_ from_nanoparticles Nanotechnology Risks Ethics and Law Hunt Mehta ed. 2006 9 Health Risks 10 Environmental Issues
Released into the ecosystem during production and as byproduct
Eventually thrown away or recycled
11 Environmental Issues Thus the first replicator assembles a copy in one thousand seconds the two replicators then build two more in the next thousand seconds the four build another four and the eight build another eight. At the end of ten hours there are not thirty-six new replicators but over 68 billion. In less than a day they would weigh a ton in less than two days they would outweigh the Earth in another four hours they would exceed the mass of the Sun and all the planets combined - if the bottle of chemicals hadnt run dry long before.
G r e y G o o
Grey goo scenario isnt an imminent danger
More desirable methods
Eventually intentional use possible
Drexler Engines of Creation (1986). In Chapter 4 Engines Of Abundance http//www.crnano.org/BD-G oo.htm 12 Societal Implications
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