answer:I am having a hard time imagining setting up the experiment so that the measurement happens often enough to produce the eternal isotope. It seems to me that the device doing the measurement would break down at some point allowing for a lag and thus decay. I completely agree with you that the quantum world is bizarre. The idea that two particles can be linked and be light years away from each other is fantastic. Observing one has an instantaneous affect on the other. Simply weird.