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 Rs.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 Rs.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 Rs. 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.'"