[IIsi50MHz]

Will, choice, and agency are unnecessary for explaining the example. It can be described simply by the forces exerted. The locations of the observers or sensing equipment matter little in this case, though they do become problematic when attempting discern whether heliocentric model fits unaided observations from a planetary surface.

[stbede]

Am I wrong to think that because equal and opposite forces are always present, names have to be given to phenomena that are not present in the formal math itself?