It could be correlated with precisely the theory I am presenting in this blog post, in that engineering is a profession focused on production and practice, not on theory. Monogamy (and other group compliance paradigms such as religion) appears to me (see also my comments on this page) to be a strategy to keep men productive. So those men which subscribe to being productive are more inclined to want to see the world as structured in a conducive way to production versus chaotic genetic diversity. OTOH, it can also be argued that the Humanities are elite political agenda indoctrination camps (with heapings of theoretical bullshit and massaging statistics to tell any story desired). Isn't life wonderfully complex. I love it.