An imaginary subject is a subject that is only imagined, never demonstrated.
DETECTABILITY
A subject is either tangible or absolutely intangible and therefore unable to alter its overall tangible condition as such conditions are opposite and mutually exclusive conditions.
An absolutely intangible subject is non-existent to the physical world as it is absolutely non-interactive and therefore unable to have any interaction with the physical world.
As interaction requires tangibility, a tangible subject is an interactive subject that is detectable by the observation of its interaction.
Any subject with the property of always being detectable when present must be absent when undetected.
Any subject that interacts with molecular electric fields as a field of force is always indirectly detectable by the observation of necessary electromagnetic waves to be produced by oscillating electric fields and directly detectable by the electromagnetic property it shares with electric fields that facilitates its interaction.
The absence of necessary electromagnetic waves to always be produced by a field of force interacting with molecular electric fields as well as the absence of an independently identifiable electromagnetic property (e.g. electric charge) that facilitates the field of force interaction with electric fields is the absence of the undetected field of force.
Existence is tangible while the undetectable presence of a universally detectable subject, and the absolute intangibility of any subject, is a physically non-existent subject.
SENTIENCE
As any given complexity must be composed of fundamental components, such a degree of complexity itself cannot be fundamental.
The sensations to facilitate the existence of any given sentience requires the fundamental existence of a sensational world interactive with a neural network to which it is necessarily tangible.
No sentience can be the origin of the sensational world nor the fundamental basis for the existence of the tangible world.
An immortal sentience with inherit control over some aspect of the molecular world would be neither undetectable in the world nor the origin of the world
if
such a sentience could even exist.
Why is there something rather than nothing?
TEMPORAL SYMMETRY
(The Yin-Yang of Physics)
K2ρ4/3 ≠ mv/c²
γ = 1/√[1 - (v/c)²] ∝ mv/c²
γ = 1/√[1 - (c/c)²] ∝ mc/c² = 2mG/c²
""Schwarzschild singularities" do not exist in physical reality...for the reason that matter cannot be concentrated arbitrarily...due to the fact that...the constituting particles would reach the velocity of light."
Gμν + Λgμν = κTμνξ = SU(1) x U(1) x U(2) x SU(3)
Standard Model: based upon three dimensions of space plus one dimension of time.
[U(1) x SU(2) x SU(3)]
Relativity Model: based upon four dimensions of space, one of which is time.
[SU(1) x U(1) x U(2) x SU(3)]
The consequence of the Schwarzschild solution, corresponding to the consequence of the Lorentz factor, shows space to be four-dimensional, not three-dimensional. A symmetrical fourth dimension not only prohibits the existence of gravitational singularities, a symmetrical fourth dimension enables the existence of all of the Standard Model fundamental forces as well as gravitation. It is the foundational 3 + 1 asymmetry of Minkowski space enjoined to the Standard Model that contributes to notions of flat space, quantum gravity and gravitational singularities. Spatially, the world is spherical (S3), not flat (𝔼3). If time were only temporal, there'd be no intrinsic connection between time and space (and thus no direct correspondence between time dilation and length contraction) making the Schwarzschild radius non-spatial resulting in velocity without limit as an existence of gravitation without the interior Schwarzschild solution would automatically result in singularity. In other words, if the fourth dimension were non-spatial, the result of its complete contraction would not be the 'space' of the Schwarzschild radius. Acknowledging the activity of the fourth dimension while denying the space that the activity must take place in results in no space at all. Both κTμνξ and the Schwarzschild solution reveals time to be spatial. Denying the spatial nature of time (via the tortoise coordinates) requires the conscious denial of the consequential singularity of the Lorentz factor to occur at the Schwarzschild radius. Choosing an m-dimensional global coordinate for an n-dimensional manifold is clearly a 'bad choice of coordinates' for avoiding singularity. Clearly, such a choice is made to result in singularity.