Understanding equates to fact? I understand the theory of evolution, but, is it not still only a theory? It's the same principle with spacetime foam, it's widely regarded as an existent property, despite there being no firm grasp of quantum gravity, thus no conceptualization of the property in a visual regard.

Again, let me rephrase. No strong basis for it's visual conceptualization.

Understanding equates to fact? I understand the theory of evolution, but, is it not still only a theory? It's the same principle with spacetime foam, it's widely regarded as an existent property, despite there being no firm grasp of quantum gravity, thus no conceptualization of the property in a visual regard.

Again, let me rephrase. No strong basis for it's visual conceptualization.