Knowledge is invariably a matter of degree: you cannot put your finger upon even the simplest datum and say this we know.
Moving between the legs of tables and of chairs rising or falling grasping...
If you're picking your best friend based on what kind of clothes she wears or...
Our dreams are firsthand creations rather than residues of waking life. We have the capacity for infinite creativity at least while dreaming we partake of the power of the Spirit the infinite Godhead that creates the cosmos.