Eh? One can test every theory I've mentioned in there, and many, such as the holographic universe principle, currently are: https://en.wikipedia.org/wiki/Hologr

Eh? One can test every theory I've mentioned in there, and many, such as the holographic universe principle, currently are: https://en.wikipedia.org/wiki/Holographic_principle#Experimental_tests https://en.wikipedia.org/wiki/Holographic_principle#Experime...