 Some diagnostic conditions (post-traumatic stress disorder, most unarguably) apparently arise from elements of their subject’s surrounding social, economic, and cultural context. Even those with more claim to idiopathic genetic, neurological, or biological causes or predisposing factors are recognized to exhibit a course more strongly influenced by environmental than (hypothesized) inherent factors, thus putting pressure on the “common cause” hypothesis, whereby a syndrome is explained by a single inherent feature (Borsboom &amp; Cramer 2013). Solely internal, organic states and processes, and genes, cannot alone explain all, and probably any, diagnostic disorders.