To grok (pronounced /ˈɡrɒk/) is to share the same reality or line of thinking with another physical or conceptual entity.”
—
Grok means to understand so thoroughly that the observer becomes a part of the observed—to merge, blend, intermarry, lose identity in group experience. It means almost everything that we mean by religion, philosophy, and science—and it means as little to us (because of our Earthly assumptions) as color means to a blind man.