torsdag den 28. maj 2009

1 kommentar:

  1. Lars29. maj 2009 kl. 22.31

    Two wrongs make a right?

    Wiki:
    Argument: Every swan I have seen is white, so it must be true that all swans are white.
    Problem: What one has seen is a special case. One can not have seen all swans.

    SvarSlet

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