If you follow the Github rabbit hole down a little bit, the founders link to this document as a justification for their stance: http://matteo.vaccari.name/blog/

If you follow the Github rabbit hole down a little bit, the founders link to this document as a justification for their stance: http://matteo.vaccari.name/blog/archives/1019 http://matteo.vaccari.name/blog/archives/1019 Basically, it seems everything they believe is "follow extreme programming as rigidly as possible and it will alleviate the downsides to being as short sighted as possible."