Sheldon says he doesn't want to be a toll booth attendant because he doesn't want to touch other people's coins (presumably due to his germophobia). However, in the Cheesecake Factory, he doesn't seem to bother touching glasses and plates which other people touch, eat and drink from.
Penny: What are you doing here?
Sheldon: A reasonable question. I asked myself, "What is the most mind-numbing, pedestrian job conceivable?" and three answers came to mind: tollbooth attendant, Apple Store genius, and what Penny does.
(Sheldon is in a fun center's ballpit in the middle of the night sorting out colored balls)
Leonard: Hey, Shelly, what are you doing?
Sheldon: Size ratio was all wrong—needed bigger carbon atoms.
Leonard: How did you get into this place?
Sheldon: Back door has a five-pin tumbler system, single circuit alarm. It's child's play.
This episode's end titles has Chuck Lorre's Vanity Card #275.
The Italian episode title is "L'approssimazione di Einstein". The German title is "Fast wie Einstein", meaning "Just Like Einstein". The French title is "La Relativité restreinte", meaning "Relativity".
Music: Murray Head's "One Night in Bangkok"
International Airdates: Latin America: March 23, 2010 on Warner Channel; Australia: April 14, 2010 on Channel 9; United Kingdom: May 27, 2010 on E4; Finland: December 6, 2010 on Sub; Czech Republic: December 23, 2010 on Prima COOL; Turkey: January 3, 2011 on CNBC-e; Slovakia: November 4, 2011 on Markiza
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