See Schrodinger's Cat: http://en.wikipedia.org/wiki/Schr%F6dinger's_cat
The act of "observation" or "measurement" is not dependent on the presence of self-aware beings. Quantum wavefunctions must necessarily collapse into eigenstates as a result of the interactions between microscopic and macroscopic objects.
Thus, things exist and happen, even if people aren't around to watch it.
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And if you say to me tomorrow, oh what fun it all would be.
Then what's to stop us, pretty baby. But What Is And What Should Never Be.
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