Hmmm...
Left-right
Down-up
Backward-forward
Negative-positive actual time
Negative-positive imaginary time

Does "backward" fall off (it's inside cave wall)? Hmmm

Let's consider evolution:
Spacetime-Galaxy
Atmosphere-Hurricane
Deep Ocean
(Baptized Lava of Earth)
Genetic intelligence in water
Human intelligence in atmosphere
Artificial intelligence in Spacetime.

See how thumb of left hand is missing a phenomenon? All the others have one.


Now, perhaps, doctrines do not fall off, but the historical correspondence does???