Dennett's Dangerous Device

I'm reading Breaking the Spell, Daniel Dennett's exploration of religion's evolutionary origins. In the middle of his baroque speculation, this sentence stopped my progress:

Put these two ideas together - a hyperactive agent-seeking bias and a weakness for certain sorts of memorable combos - and you get a kind of fiction-generation contraption.

Fiction-generation contraption! What a happy phrase. I wonder how many iterations of Dawkins' weasel would suffice to turn that sentence into a perfect description of Darwinism.