# S3-Scientific Breakthroughs

By [Big Bang Theory Fans](https://dylit.info/user/bigbangtheoryfans)

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Episode 3: The Gothowitz Deviation Sheldon secretly runs a “relationship experiment” on Penny, using chocolate as a Pavlovian reward to condition her into preferred behaviors while living with Leonard. At the same time, Howard and Raj reinvent themselves as goth bad boys at a nightclub in a misguided attempt to attract women, only to realize the look is easier to buy than the lifestyle