The latest of a number of really good posts from you that directly address the concern of this blog. You seem to be really starting to "grok" the terrifying reality of just how biased we are by the very nature of our thought processes, and coming up with good and useful steps to reduce those biases. Nicely done.
we can't build a self-replicating system the size of a butterfly
I must have missed when we built any self-replicating systems at all. . .