Thank you for re-posting my comment over here. You bring up a good point that may offer a surprising distinction between views of reality. Using a mechanical notion for a smallest device can be useful for visualization, but one might ask what the device itself is made from so it does not put off the problem one level deeper.
I like the theme of this essay contest because it asks us to define at least one aspect of the reality device. Is it digital or analog? Is it produced by digital processing or a continuous system?
I read your own essay with a twinkle in my eye because consciously or subconsciously you picked a fairly extreme example in the Archimedes screw as the smallest mechanical device explaining reality. Let's say, for example, everyone agrees that a bold Archimedes screw is the smallest device. Of course, none of us would think it is made out of metal or wood. It would, however, be made of something. Wouldn't that something itself have internal forces holding the screw together, keeping its shape, and making it move?
Interestingly, the same question applies to other possible smallest mechanical devices that appear in some other essays. A digital processing model would be similar because it would need something to perform the processing.
So we really need a description of how the smallest device holds together internally (or digitally processes). Once we have that description, the higher operation would hopefully be clear and its predictions could be tested.
In my essay I explore a system of forces that might occur inside a smallest device which is really not a mechanical device at all. I'm tempted to say there is nothing there, but there is something defined with a point-like center position. As forces cause motion of this something, I suppose you could say an enveloping shape appears, mostly resembling a fuzzy sphere similar to that described in some other essays. We are describing the same thing after all, which is what makes up photons, electrons, and protons.
A photon in this model could resemble an Archimedes screw as it travels, but it would not be a screw; nor would there be actual mechanical screws in space moving the photon along. The exploratory model I am proposing uses only a pure system of potentials, forces, and motion propelled from a single quantum vacuum potential. What that potential is made of also needs further definition but to me it provides a more satisfactory deep-level explanation without needing a mechanical device.
Thanks again for your comment. I'm curious what you think of this type of approach.
Kind Regards, Russell