Photo: Diabolic Preacher, Creative Commons, FlickrA first year law student sulkily came out of his classroom. A friend, who was already a senior, saw him and asked what the problem was.
"My professor drilled me for thirty minutes while the others who were called recited for only two minutes," The freshman answered. "He's so unfair!"
"No, he's not unfair. He's arbitrary." Said the senior.
"What's the difference?"
"Arbitrary means he's unfair with a law degree."