Constructor Theory & Optimism

Unless I missed it, you didn't expand on why this connection shows up
(which was fair enough given the scope of the paper).  I was quite
interested in why the reason might be....the only visualization I could
come up was that you must be envisaging the product of CT as a kind of
network of possible routes of discovery, the optimism being that those
routes are there. Just a stab...but you got any time to expand on that
one a bit?