David met Sandor over a decade ago at a conference in Carboro, North Carolina. RPM was performing a puppet show about composting human feces and the system that represses human waste; Sandor was teaching folks how to make sauerkraut and harness the power of unfettered culture. At that point future collaboration became all but inevitable.
Get your very own copy of Sandor's new book at a very respectable discount directly through the author by following the link below.
http://www.wildfermentation.com/the-art-of-fermentation/