The human specie is not evolved enough to ‘see’ the universe.
And by see, I mean recognize. The problem is a lack of intellectual and mental evolution. Most human animals perceive the world in 3-spatial dimensions and apprehend the universe as a whole through geometry, space, and depth. But Newtonian physics and Einstein general relativity present more aspects to the known and unknown universe, namely, time. Gravity, space, and time have a strict and distinct variable relationship with each other. The combination of gravity, space, and time, provides the experience of acceleration and velocity.
It is only through acceleration that any possible “shape” of the universe can become known.
The universe is not a 3-dimensional shape. Therefore, simple relations of geometry, space, and depth cannot adequately provide even a brief analysis of what the universe is, how it is, or why it is. Humans therefore, cannot comprehend the universe to any significant ability.
An ant navigating through its dirt ant colony is similar to a human navigating through space and time. The relationships are analogous. For an ant to postulate human knowledge of the universe is as inadequate as humans professing and possessing knowledge of the universe themselves. Human knowledge is miniscule.
The 3-dimensional “shape” of the universe can only become apprehended by the application of time and acceleration to geometry. Shapes are not fixed and stagnant, but relational to inherent energies within… energies which expand and shrink, grow and retract. The causes and affects of these energies are the bending of space and time. Humans call this “gravity”, but there is more to it. Gravity is a relational balance between energies. Energy and geometric shape must have a working relationship, constant and comparable variables, in order to understand how objects can exist within the universe and affect spacetime.
Spacetime further becomes complicated by acceleration, the speed of exponential expansion and shrinkage of spacetime. In other words, if an object grows and shrinks in mass or volume, while traveling in spacetime, then its direct effect on any spacial environment is unrecognizable in 3-dimensions.
Therefore, the human mind cannot perceive the universe with such a simple application of these physical concepts.