I am a medical doctor with only an amateur interest in space-time, so please forgive me if this is stupid. Has anyone thought about gravity in the following way? We know that space-time distorts near massive bodies so that "time flows more slowly" there – gravitational time dilation, right? We presume that there is a phenomenon of quantum foam at the Planck length /quantum scale - right? Could the phenomenon of gravity not be explained by more frequent bumping of quantum foam fluctuations/pings against the “higher” parts of an object in free-fall (“time faster”) compared to the lower (“time slower”) parts, causing a Casimir-like effect resulting in a differential force pushing the object toward the massive body? It might even be testable. If it were true, then in a complete vacuum, a tiny object (atom, buckyball etc) might fall more slowly than larger macro-object which spanned a greater differential within the time gradient. Obviously, differences would be really small, and the resultant effect caused by the combined mass of the free-falling objects and the massive body would need to be taken into account. I can’t do hard maths, but isn’t this a theory of quantum gravity? Thanks for any feedback! Adam Douglas.