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Things that are impossible

  1. Sep 22, 2010 #1

    wolram

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    How many can you think of like, its impossible to pull your self up by your shoe strings.
     
  2. jcsd
  3. Sep 22, 2010 #2

    cronxeh

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    Impossible to make someone love you
     
  4. Sep 22, 2010 #3
    There's an infinite amount of things that are impossible. I could just say it's impossible to jump to mars, then say the same thing about every other planet, moon, star or chunk of ice or rock in the universe.
     
  5. Sep 22, 2010 #4
    I've seen someone jump to the moon. However, a dinosaur with 15 horns is likely impossible.
     
  6. Sep 22, 2010 #5

    Evo

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    Actually, that's quiet easy. Many people are fake in order to get someone to fall in love with them, the problem is that they can't keep up the ruse forever.
     
  7. Sep 22, 2010 #6

    lisab

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    How about a cow with 2 horns, jumping over the moon?
     
  8. Sep 22, 2010 #7

    Evo

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    Timing is esential because, based on all pictures I've seen, it needs to be a crescent moon so that the cow doesn't have as much distance to travel.
     
  9. Sep 22, 2010 #8
    And the cow could wait till after moon set.
     
  10. Sep 22, 2010 #9
    Impossible also says I`m possible
     
  11. Sep 22, 2010 #10

    Pengwuino

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    Ignoring friction.
     
  12. Sep 22, 2010 #11

    cronxeh

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    Pengwino not blowing a gasket while grading homework
     
  13. Sep 22, 2010 #12

    Office_Shredder

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    It's very easy to ignore friction. Doesn't mean it's not there of course.

    There are more things that are possible than impossible: If X is impossible, then not X is possible (in fact necessary). On the other hand, if X is possible, not X might also be possible, so this is not an involution

    The possibility hypothesis: Is the set of things that is possible the same cardinality as the set of things which is impossible, or are they different sizes? Alternatively, is this question unanswerable?
     
  14. Sep 22, 2010 #13
    I think more things are impossible than possible. For instance, it is well know that barbers can't shave themselves nor can they fail to shave themselves.
     
  15. Sep 22, 2010 #14

    Danger

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    While I can't say that it's absolutely impossible, I've had no success whatsoever in trying to teach a snake to tap-dance.
     
  16. Sep 22, 2010 #15
    I know someone who can neither enter into the USA nor capable of sexual activities.
     
  17. Sep 22, 2010 #16

    Char. Limit

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    Everything has a probability, no matter how vanishingly small, of occuring.

    Nothing is impossible.

    Therefore, more things are possible than impossible.
     
  18. Sep 22, 2010 #17

    Ivan Seeking

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    Obviously you've never been married.
     
  19. Sep 22, 2010 #18

    Pengwuino

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    Proof?

    I think not.
     
  20. Sep 22, 2010 #19

    Char. Limit

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    Nope.

    If x>0, is it not true that x>0?
     
  21. Sep 22, 2010 #20

    Office_Shredder

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    The barber's a woman!

    not is a logical negation. So if the original statement is: It's impossible for barber's to shave themselves, then the negation is it's possible that barber's can not shave themselves. Basically, if something is impossible then it's possible that it's impossible. If you have a reverse inclusion or a surjection feel free to share it

    If x>0, there's a small possibility that I was referring to complex numbers the whole time and there is no field ordering available
     
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