David Deutsch argues in Fabric of Reality that only the Multiverse
conserves quantity (not single branches). The rest is probabilistic
stuff (see Bruno's post)
Telmo Menezes wrote:
> Yes, you're right. Still I think my argument holds. The production of
> the rifle, bullet and geiger counter system plus the geiger counter
> operation should produce more than enough entropy to compensate for
> the atom not decaying.
> On Thu, Apr 17, 2008 at 1:45 PM, Michael Rosefield
> <[EMAIL PROTECTED]> wrote:
>> It's not so much the input of energy, it's the production of more entropy
>> where the energy is taken from.
>> On 17/04/2008, Telmo Menezes <[EMAIL PROTECTED]> wrote:
>>> I would like to argue that in setting this experiment, energy is being
>>> expended to prevent the increase in entropy, albeit not in an obvious
>>> It is a trivial observation that systems may be devised that prevent
>>> increases in entropy by paying energy costs. One example is an ice
>>> cube in the freezer.
>>> In the case of this experiment, and assuming MWI, we are creating a
>>> scenario where the atomic decay is not possible from the
>>> experimenter's perspective. However, the experimenter is setting a
>>> system that includes the rifle and the geiger counter. Both these
>>> devices need energy to operate. Maybe it's just a convoluted version
>>> of the ice cube in the freezer?
>>> Best regards,
>>> Telmo Menezes.
>>> On Tue, Apr 15, 2008 at 12:18 AM, nichomachus
>>> <[EMAIL PROTECTED]> wrote:
>>>> In the description of the quantum immortality gedanken experiment, a
>>>> physicist rigs an automatic rifle to a geiger counter to fire into him
>>>> upon the detection of an atomic decay event from a bit of radioactive
>>>> material. If the many worlds hypothesis is true, the self-awareness of
>>>> the physicist will continue to find himself alive after any length of
>>>> time in front of his gun, since there exist parallel worlds where the
>>>> decay does not occur.
>>>> On a microscopic scale this is analogous to the observing a reality in
>>>> which the second law of thermodynamics does not hold. for example,
>>>> since there is a non-zero probability that molecular interactions will
>>>> result in a decrease in entropy in a particular sealed volume under
>>>> observation, there exist histories in which this must be observed.
>>>> This is never observed. Therefore the MWI is shown to be false.
Department of Philosophy of Science
University of Vienna
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