Steven -
Your brief essay hinges on an idea that's very important to me - "The quantum worldview does not see the universe as a clockwork machine, but as a problem solving system." Have you developed this thought further? Or have you seen this kind of approach to QM anywhere else?
You identify the "problem" as "maintaining temporal continuity," given that in any situation, there's no causal rule that defines what will happen next. That makes a lot of sense to me, though it's a short-hand description for something very complex - i.e. how the world is able to determine itself moment to moment, through a web of many kinds of interaction.
My current essay only deals with this issue indirectly, in terms of the mathematical language of physics. But some of my attempts to think about how this process works are reflected in essays I submitted to FQXi for the 2012 and 2013 contests. These both discuss the kinds of interaction-contexts that are needed to measure and communicate information.
I agree with you that the problem-solving functionality of the physical world should be seen in a broader evolutionary context. I think there's a special class of problems that plays a key role in nature - namely those for which every successful solution only recreates the problem once again. The best-understood example is the problem of biological reproduction. Every living organism in the world comes from a long line of progenitors, every single one of which somehow succeeded in solving this problem; yet each new organism faces this problem all over again itself. Self-reproduction is by far the most complex and difficult process any organism undergoes; yet it's ubiquitous in biology because it's what makes evolution possible.
I think the problem you refer to so succinctly in your essay is just this type of problem, in that each "outcome" depends on a long line of prior determinations, and contributes to setting up new situations in which new outcomes become possible. Though this is very different from linear reproduction in biology, it may also be a kind of evolutionary process - though one that gives rise to a macroscopic domain that seems to be governed by changeless, perfectly precise causal laws.
In the domain of human imagination, as you note, this kind of process flourishes. Not only in math but in every aspect of human existence, every new solution only generates more interesting and difficult problems.
Thanks for the chance to comment on your very interesting essay -
Conrad