“Grok” was first used in Robert Heinlein’s 1961 sci-fi novel, “Stranger in a Strange Land,” and while it was coined as a fictional Martian word, the meaning of describing a deep sense of knowing and understanding has many real-world applications. “The Jargon File,” a dictionary of programmer slang, says, “When you claim to ‘grok’ some knowledge or technique, you are asserting that you have not merely learned it in a detached instrumental way but that it has become part of you, part of your identity.”