<html><head></head><body><div><span data-mailaddress="rafal.smigrodzki@gmail.com" data-contactname="Rafal Smigrodzki" class="clickable"><span title="rafal.smigrodzki@gmail.com">Rafal Smigrodzki</span><span class="detail"> <rafal.smigrodzki@gmail.com></span></span> , 1/12/2014 8:43 AM:</div><blockquote class="mori" style="margin: 0px 0px 0px 0.8ex; border-left-width: 2px; border-left-color: blue; border-left-style: solid; padding-left: 1ex;"><br><div class="mcntgmail_extra"><div class="mcntgmail_quote"><div>### Scratching steel should be easy :)</div><div><br></div><div>"TC is forever and 1/1000th the price" - that should be the motto of people who know better than to believe what the jewelry peddlers are telling us.</div></div></div></blockquote><div><br></div><div>Well, it cannot survive the solar photosphere. But for most normal activities outside nuclear fireballs it is forever. I was a bit worried that it was vulnerable to acetone given some text on Wikipedia, but Eric Drexler looked into it and found that the mention was due to a misreading of the original paper; it has been corrected.</div><div><br></div><div>I briefly looked at jewels, and found silicon carbide (moissanite) to be intriguing. Again, way cheaper than diamond, almost as hard, and with great optical properties. </div><div><br></div><div>Carbides are generally quite awesome. </div><br><blockquote class="mori" style="margin: 0px 0px 0px 0.8ex; border-left-width: 2px; border-left-color: blue; border-left-style: solid; padding-left: 1ex;"><div class="mcntgmail_extra"><div class="mcntgmail_quote"><div></div></div></div></blockquote><br>Anders Sandberg,
Future of Humanity Institute
Philosophy Faculty of Oxford University</body></html>