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This is a staple of sci-fi (probably a trope): some mundane thing is declared to be "only found on Earth". I think some foods have been mentioned before as being "unique to Earth as far as we know in the galaxy", but I can't remember what.

Has that ever been mentioned, or am I partially remembering wrong?

EDIT: I'm not asking for a list. A list of all these would definitely be a wrong thing to ask. Not a list. Just was that used and an example.

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    WOuld a list help?
    – Valorum
    Jan 22, 2014 at 20:25
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    But then when someone comes up with a different answer of one item, you get into the issue of "which one item is more correct than the other". So, this really does fall under the list question problem.
    – phantom42
    Jan 22, 2014 at 21:18
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    See also: Are one-sided answerable questions non-constructive? and Are questions looking to simply prove or disprove a premise with a yes/no answer a good fit for our site?
    – phantom42
    Jan 22, 2014 at 21:20
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    You may not be asking for a list, but a list is what you'd get. First one person posts one example, then another person posts another example, and the end result is a list.
    – user8719
    Jan 22, 2014 at 21:37
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    I'm saddened by what this place has turned out to be. It wasn't like that in the beginning. Used to be you could ask questions. Now, if the answer turns out it could be a list, it's not valid. /rant
    – MPelletier
    Jan 22, 2014 at 21:43

1 Answer 1

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Humans? They might be on other planets now, but they all came from Earth originally.

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    Nice try :) Even that is a bit thrown off, as a lot of old TOS episodes had something like "very close to human" aliens.
    – MPelletier
    Jan 22, 2014 at 20:59

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