Kirk Moodey reviewed Einstein by Walter Isaacson
Review of 'Einstein' on 'Goodreads'
There are plenty of reviews going over how enjoyable or not the biographical content was. However, I haven't seen any of them here address the point that the EPR experiment is not presented as well as it could be.
'We can take measurements on the first particle, the authors asserted, and
from that gain knowledge about the second particle “without in any way
disturbing the second particle.” By measuring the position of the first parti-
cle, we can determine precisely the position of the second particle. And we
can do the same for the momentum'
The last should read 'alternatively we can do the same for momentum', as it is actually a rather important point in EPR that it is /not/ attempting to measure position and momentum at the same time, but rather, that the second particle should have no way of knowing which experiment we chose to perform and …
There are plenty of reviews going over how enjoyable or not the biographical content was. However, I haven't seen any of them here address the point that the EPR experiment is not presented as well as it could be.
'We can take measurements on the first particle, the authors asserted, and
from that gain knowledge about the second particle “without in any way
disturbing the second particle.” By measuring the position of the first parti-
cle, we can determine precisely the position of the second particle. And we
can do the same for the momentum'
The last should read 'alternatively we can do the same for momentum', as it is actually a rather important point in EPR that it is /not/ attempting to measure position and momentum at the same time, but rather, that the second particle should have no way of knowing which experiment we chose to perform and this is entirely the idea, that measurement on A fixes the same property correlated in B but B has no way without some spooky faster than light signalling of deciding what property to correlate with perfectly.
