Fun topic which inspires me to mention two goodies that help fuel in-depth conversations about measurement and conversion: 1) The Measure of All Things - http:

Fun topic which inspires me to mention two goodies that help fuel in-depth conversations about measurement and conversion: 1) The Measure of All Things - http://www.kenalder.com/measure/ http://www.kenalder.com/measure/ (science history goodness) 2) Frink - http://futureboy.us/frinkdocs/ http://futureboy.us/frinkdocs/ (one of my first discoveries on HN and still one of the most fun to return to)