Jatin and Gagan were close brothers until Jatin graduated from Yale and became a renowned scientist who made millions. Not wanting to be outdone, Gagan invited Jatin over to a mansion that he claimed was his. He showed Jatin many wonderful things inside the house one of which was a golden statue.
"This was a little gift from a friend of mine," Gagan said, rapping on it with his fist, "It's made out of pure gold. See? Even my powerful fist can't make a dent in it."
"I have to say, this is all impressive," Jatin admitted, "but I know this is all fake, Gagan."
How did Jatin know Gagan was lying?