DrW wrote:Finally, there is one issue that I saw as a weakness in the documentary. That was the implication that, since entanglement and other quantum phenomenon have been demonstrated with multi-atomic "particles" or particle ensembles, that these phenomenon might not be limited to the domain of small dimensions, low temperatures, etc.
The documentary did not address thermal de-coherence, which severely limits the observation of QM behavior in systems at the human dimensional scale and in human environments.
mikwut wrote:Your quibble is a common one between the quantum mechanical universe being separated from the macro universe and decoherence is the way it is appropriately stated. But, this is yet to completely play out all the evidence seems to moving in the direction that this is not a weakness at all and supportive of idealism. It just doesn't seem the quantum world can be separated from the macro world and we just don't have the precision of measurement. Brukner and Koffner have shown that marco-realism does emerge from quantum physics http://arxiv.org/pdf/quant-ph/0609079v3.pdf This has been shown by the double slit experiement being performed with larger bodies like atoms, and molecules http://ipg.epfl.ch/lib/exe/fetch.php?me ... ithc60.pdf and experiments are being done to do this on midsize proteins and viruses http://arxiv.org/pdf/0909.1469.pdf and it is really not doubted those experiments will turn out the same. Entanglement has also been seen in macro objectives like two computer chips where it can be seen by the naked eye and putting a small metal paddle into a quantum superposition http://www.nature.com/news/2011/050411/ ... 1.210.html http://www.nature.com/news/2010/100317/ ... 0.130.html
The bottom line is physicalism doesn't seem to be able to escape idealism even in the marco world.
mikwut
If you read my post again, you will see that I readily acknowledged the observation of QM phenomena with larger, multi - atomic objects.
(by the way, in spite of my inclusion of low temperature as requirement for observation of QM in atomic or molecular ensembles, you failed to acknowledge that the small metal paddle you described had to be cooled to the ground state of its constituent materials - near absolute zero - in order to see the super positioning.)
In any case, should I take your response as a denial that thermal de-coherence does, in fact, impress strict limits on QM phenomena / behavior?