As one of Einstein's famous quotes: "The true sign of knowledge is Imagination" As much as we understand the mechanisms of the universe a mere 1 percent or even less than a fraction of 1 percent of universe. It also sends us a strong message that there may actually be limitations to how much civilizations could develop. There are already signs that we are actually at our peak such as ability to visualize physics in higher dimensions are abstract and is very difficult to perceive. One of the strangest things about the Einstein field equations is that it tells us about the reality of space-time, the fundamental understanding which gives rise to gravity and yet space-time is also a metric that is imaginary described with mathematical co-ordinate references. The field equations also tells us about the fundamental limits of the universe aka black holes.
Black holes have been proposed with many theories but it also is an incomplete system, it makes sense to have black holes and dark matter, however more than black holes, dark matter is strange and very difficult to observe. The reality actually work with the most abstract concepts, with very limited applications from linear models like Newtonian physics. Newtonian physics helps us to understand fundamental physics natures but collapse near relativistic speeds, describing very small particles and explaining black holes as well as dark matter. Another fundamental limit described by the theory of relativity is that speed of light. Mass-less particles may travel at an approximate fraction to the speed of light, but it is possible that particles near black holes travel perfectly at 1c. We cannot perceive information natures at light speeds, space-time observations in reality in light speed or how light speed would effect our feelings and experiences. Computers operate with the speed of electricity with a sequence 1s and 0s. Quantum computers will vastly outperform digital computers with the mechanism of qubits and coherency of photons or laser-based computations.
Another fundamental limit humans have is death, what is the soul? Does the soul have it's own laws of physics, does the soul have it's own sense of consciousness? One thing is clear the soul is completely unrelated with the body and the material reality. Often our senses can deceive us when we look at the vast streches of the overwhelming universe. In the same manner how higher dimensions are actually projected in a 3d space and not a high space. We have four dimensions in reality, 3 dimensions of space and 4th dimension of time. The fifth dimension might be gravity and the 6th dimension can be dark matter. The interaction of gravity fields in higher dimensions may be a result of dark matter.