
it's to do with not being able to measure quantum events without changing them. i thin he was taking the piss.
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Tue 15 Nov 2005, 3:21,
archived)

and it's all starting to make sense now...
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Tue 15 Nov 2005, 3:21,
archived)

from en.wikipedia.org/wiki/Schrodinger%27s_cat
Contrary to popular belief, Schrödinger did not intend this thought experiment to indicate that he believed that the dead-alive cat would actually exist; rather he considered the quantum mechanical theory to be incomplete and not representative of reality in this case. Since a cat clearly must either be alive or dead (there is no state between alive and dead, e.g. half-dead) surely the same must be true of the nucleus. It must be either decayed or not decayed.
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Tue 15 Nov 2005, 3:25,
archived)
Contrary to popular belief, Schrödinger did not intend this thought experiment to indicate that he believed that the dead-alive cat would actually exist; rather he considered the quantum mechanical theory to be incomplete and not representative of reality in this case. Since a cat clearly must either be alive or dead (there is no state between alive and dead, e.g. half-dead) surely the same must be true of the nucleus. It must be either decayed or not decayed.