A Relativistic Theory of Consciousness
frontiersin.org
frontiersin.org
"Phenomenal consciousness is only seemingly private because in order to measure it one needs to be in the appropriate cognitive frame of reference. It is not a simple transformation to change from a third-person cognitive frame of reference to the first-person frame, but in principle it can be done, and hence phenomenal consciousness isn’t private anymore."
[facepalm]
I do think that consciousness is not recognizable by us, when it might exist, due to the spatial and temporal interval in which we reside.
For example, a tree, or a galaxy, can be conscious, but we'd never notice with the time it takes for the tree to react to seasons or millenial-long climate changes, or the space that the galaxy changes over -- and the speed of light limiting its reactions.