This guy is selling three parrots. Another guy who wants to buy a parrot approaches him and asks, “How much are your parrots?

“The salesman answers, “The first one is $1,000.” “What does he know?

“”He knows 10,000 words and 500 sentences and is able to solve mathematical expressions.””How about the second one?

“”The second parrot costs $5,000.””What does he know?

“”He knows 100,000 words and 10,000 sentences, is able to solve mathematical expressions, and create computer programs.””Then what is the price for the third one?

, the buyer is wondering.””This one costs $20,000.””Really?

!, wonders the exciting buyer. What does he know?

“”This one knows absolutely nothing, but the two others always call him ‘THEIR BOSS.'”