Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
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US Ratings: 16.20m viewers. Nielsen Rating: 10.3/15. Nielsen 18-49 Rating: 6.0/14.
Writers
Chuck Lorre (Story), Steven Molaro (Story), Jim Reynolds (Story), Lee Aronsohn (Teleplay), Richard Rosenstock (Teleplay), Maria Ferrari (Teleplay)
Director
Mark Cendrowski
Sheldon: There's an economic concept known as a positional good in which an object is only valued by the possessor because it's not possessed by others. The term was coined in 1976 by economist Fred Hirsch to replace the more colloquial, but less precise "neener-neener".
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