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IAAP. This has nothing to do with the uncertainty principle, because your intepretation of the popular rendering of the uncertainty principle ("observing someth
by Confusion 17y ago
IAAP. This has nothing to do with the uncertainty principle, because your intepretation of the popular rendering of the uncertainty principle ("observing something changes it") is wrong. I grant that nearly everyone, including many physicists, think your interpretation is correct, but it is in fact wrong.
The uncertainty principle even holds when the measurement procedure could not possible transfer enough energy to the system being measured to change the outcome of the measurement. It is a fundamental property of the mathematics describing quantum phenomena, that does not just come about when factoring 'the act of measuring and the consequent perturbation of the system' into the equation. Measuring a system disturbs it, but that also holds in classical systems. Any first year physics student should realize that after his first few experiments and will be able to take it into account when presenting his results (for instance: a thermometer takes heat away from a system, because it heats up itself). However, you can often take this into account exactly or at least so precisely that it does not influence the overall uncertainty of your measurement (due to the thermometer having only a 0.1 degree measurement accuracy). This isn't true for uncertainties due to Heisenberg's principle: they are always there, always have the same relative magnitude and are independent of the kind of measurement. Taking measurements causes you to notice the Heisenberg uncertainty relation, but it does not cause that relation.
This Google thing is more like the point made in Frank Herbert's Dune series over and over again: if your predictions are taken seriously, then you cannot predict the future without causing it to come about. This doesn't hold for the carny kind of predictions, because most people don't believe in them. In does hold for Warren Buffet's kind of predictions, which is why he doesn't want people reading the annual report of his company.