[ExI] Cramer on impossibility of FTL communication

John Clark johnkclark at gmail.com
Sat Sep 5 16:23:29 UTC 2015


On Fri, Sep 4, 2015 at 10:50 AM, Diego Saravia <dsa at unsa.edu.ar> wrote:

​
>> ​>> ​
>> A​
>> lthough influences can be transferred faster than light this can not be
>> used to send a message. Think of quantum entanglement as 2 entangled coins,
>> I have one and you have the other, no matter how far apart we are if I flip
>> my coin and it comes up heads then when you flip your coin it will always
>> come up heads,
>>
>
>
> ​> ​
> when you flip? How much time could take from one experiment to other,
> without breaking
> the entanglement?  Is not possible to use time to transmit info? I
> meassure one coin, the other part notice that you meassure it. Time between
> two experiments for example.
>

​Suppose that you're my ​lookout and we've agreed that heads means the
enemy will attack by sea and tails means the enemy will attack by land. You
find out they are attacking by land but you have no way of sending that
information to me. You could flip your coin and yes my coin will flip the
same way as your does but you have no control over how your coin will flip,
it's just as likely to come up heads as tails. So I'd do just as well (50%)
if I tossed the entangled coin in the trash and just flipped a regular
coin, there would be a 50% chance it's correct either way.

 John K Clark





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> --
> Diego Saravia
> Diego.Saravia at gmail.com
> NO FUNCIONA->dsa at unsa.edu.ar
>
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