TV Episode | TV-PG | | Comedy
To appease his worried mother, Sheldon employs the techniques of a self-help book to try and make a friend.
In The Big Bang Theory (2007), episode 4.18, The Big Bang Theory: The Prestidigitation Approximation (2011) Sheldon (Jim Parsons) makes reference to when he was a child and got into trouble with Homeland Security after purchasing uranium to use it to charge electricity. We see what happened in this episode.
The book Sheldon checked out from the library would not have the card with the names of the people that had previously checked out the book. The library would have kept this card when Sheldon checked out the book.