Seeing as if 4D

[anagogy]

I think we can understand 4D from a 3D level, but the problem is we are not in bodies that facilitate those energies to a high degree.  In the same way that an 2D animal may tap into 3D energies like self awareness, they're aren't in a body with a brain that can really appreciate the subtle nuances of self awareness.  You aren't going to see a cat appreciating poetry for example, or wondering about its place in the cosmos.  In the same way, we can tap into the bare bones energy of green ray, but we don't have a body that allows our consciousness to truly appreciate its finer nuances.