Dear Philip
I enjoyed reading your very interesting essay. It is well structured and well written. I would not hesitate to give a high score. I agree with your view of causality, I think that causality it is just a construction of the mind to try to predict a forthcoming event. To achieve this, the mind tries to find correlations among possible factors that may lead to a particular effect. If the universe were causal if would be deterministic and thus predictable. This also presupposes that the laws of physics either existed before the creation of the universe or were created along with the universe.
You said: There is no general consensus yet on how to replace space and time but there is a widespread view that the space-time manifold as we knew it in general relativity is no longer the accepted starting point. It is just an approximation to some other unknown mathematical structure.
My essay has something to say in this respect though my thesis does poses a view that does not go along with the current trends in physics. Vesselin Petkov claims in his essay that gravity is not a force, this claim, I believe, would have profound implications in the present notion of space-time. My line of research is condensed matter. Within the literature of this field I have found a series of reports that hold that the vacuum resembles more a condensed state of matter, which suggests itself that space is more a material fluid than just geometry as modeled in relativity. I am in agreement with this view but I reached this possibility following another line of reasoning. In my essay I claim that when theoretical physics cannot move forwards is because it has to go backwards and reconsider some old conceptions that could be helpful to solve our present problems. Vesselin and many theoretical physicists holds that there is a crisis in physics and that in these moments of desperation any possibility is valid. I do agree. Though I am aware that my proposal can be amply view as heretic for contemporary physics I am confident that conceiving space as a material fluid is the correct path to get out of the present puzzle. So, I invite you to read my work and I would be grateful if you could leave some comments.
Best regards and good luck in the contest
Israel