909 - The Platonic Permutation
Aired November 19, 2015

The Platonic Permutation

Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought.

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Guest Stars: Elon Musk as Himself, Wayne Wilderson as Travis

Writers: Jim Reynolds (Story), Jeremy Howe (Story), Tara Hernandez (Story), Steve Holland (Teleplay), Maria Ferrari (Teleplay), Adam Faberman (Teleplay)

Director: Mark Cendrowski

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Episode Notes

  • The title refers to Sheldon and Amy spending Thanksgiving together as friends following their break-up.

Quotes (41)

Amy: Let's see. I have been on six dates with three different people. It was either for coffee or dinner. One I met at a bookstore and two I met online. I haven't slept with anyone. The aquarium is 40 minutes away. And there's a baggie of Cheerios for you in the glove compartment.
Sheldon: Uh, regular or honey nut?
Amy: I mixed them.
Sheldon: You mixed them. No wonder gentleman callers are pounding down your door.

Sheldon: Amy, I excel at many things, but getting over you wasn't one of them. I think I need to just be your friend.

Amy: Sheldon, we've known each other a long time. We are perfectly capable of having a conversation without relying on a list off the Internet.
Sheldon: All right. Well, what should we talk about?
Amy: I don't know. Just ask me whatever comes to mind.
Sheldon: Very well. I know you've been seeing other men. Have you had coitus with any of them?
Amy: Man, I walked right into that one.

Raj: Have you guys seen this feature that lets you talk to Siri without pressing any buttons?
Howard: No. How does it work?
Raj: You just say, uh, "Hey, Siri, what time is it?"
Siri: The time is 6:37 p.m.
Howard: So now anyone can control your phone? Hey, Siri, show me pictures of naked grandma butts.
Raj: Nice try. It only recognizes my voice.
Howard: Oh, cool. (Imitates Raj): Hey, Siri, show me pictures of naked grandma butts.
Raj: I don't sound like that.
Siri: Here are some images of naked grandma butts.

Leonard: Face it, you can't stump me. I am the king of husbands.
I know that you don't like the lingerie that I got you on Valentine's Day.
I know you hate the word "moist."
I know-
Penny: Hang on. Wait, wait. Why don't I like the lingerie you got me?
Leonard: Because it's orange and you think it makes you look like a slutty carrot.
Penny: Interesting. I never told you that.
Leonard: Sure you did.
Penny: No. I never told anyone that. But I did write it in my journal.
Leonard: (In a high-pitched voice) What? I didn't know you had a journal.
Penny: I also know your voice gets higher when you're lying.
Leonard: (In a deep voice) No, it doesn't.

News Stories

Title Date Posted
909 'The Platonic Permutation' Press Release November 10, 2015

CBS has released the synopsis for the November 19 episode of The Big Bang Theory, "The Platonic Permutation". Inventor and Tesla CEO Elon Musk makes a cameo appearance as himself in the episode.  Full story


Sue United States, 19:23 Nov 22 2015.
I'm depressed because I wasn't able to see the new episode of BBT!!! Football preempted it!!! I was so mad! I turned off the TV! Ugh!
Beth United States, 22:34 Nov 21 2015.
I think they should have penny get pregnant to add to the show or burandate
Mario Durante United States, 08:51 Nov 21 2015.
Agree with the comment on Penny/Leonard. They are newlyweds and don't seem to act as such. They don't seem to be as intimate as when they were just dating. Believe the writers are straining for plotlines for them now that they are married. Hopefully, the second half of the season shows a little more creativity.
Ice United States, 01:41 Nov 21 2015.
The ending, knowing Sheldon, was appropriate. Reality means ups and downs, and not always getting what you want. Fans should be patient, I predict Shamy's the plot line for Season 9...with its season ender being Sheldon and Amy's reunion. Probably even a proposal. Get real if you think the writers and Directors would destroy that eventuality. My issue is with Raj's girlfriends. He's a doll and deserves to see/have someone like him not all these 360 incompatibilities. Hope Stuart eventually gets lucky.
sladenoddy United Kingdom, 13:17 Nov 20 2015.
not funny at all, first Leonard and Penny are scared of losing each other but they just don,t show the love between the two at all, very confusing.
Veerareddy Canada, 23:39 Nov 19 2015.
Nice Episode but screwed up in the ending....poor ending
Manisha India, 23:30 Nov 19 2015.
Amazing episode.. perfect balance and justice with all characters..ending was really sad despite knowing what's in store for shamy..
Leanna United States, 21:23 Nov 19 2015.
We didn't get it either! Whole family unhappy.
Terry United States, 20:14 Nov 19 2015.
Is this really airing in some places? All we're getting is football and we're not happy about it!

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