Eh? One can test every theory I&#x27;ve mentioned in there, and many, such as the holographic universe principle, currently are: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Holographic_principle#Experimental_tests" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Holographic_principle#Experime...</a>