In this ep of "The Big Bang Theory": Leonard reluctantly gets Sheldon and Howard to talk to some female middle school students about choosing science and math as career options. Howard uses his celebrity influence (he's an astronaut, remember?) to pick his alma mater. Meanwhile, Raj joins Penny, Amy, and Bernadette for girls night out to talk about where to take Lucy for a date. Disneyland is one of the suggestions but Raj rejects that though that does give the women an idea to play hooky and go themselves. Raj eventually takes Lucy to the library for lunch where they text each other. I'll stop there and just say this was another hilarious ep with some great touching moments concerning Raj and Lucy. So on that note, "The Contractual Obligation Implementation" was another great edition of "The Big Bang Theory".