Thursday, 20 July 2017

Empty Rocks


When Brian (BBC Science prog) Cox picks up a stone and tells us that it is mostly composed of empty spaces he is speaking in analogical terms as though what we consider as empty in the normal way applies to the molecular level description. It involves a freezing in time of the molecular events which is essentially a falsification for practical purposes to produce a model of the molecule. This is useful but is not to be taken as the reality. It is an analogy with a very narrow focus in order to enhance understanding. Such abstraction is like the reducing of time to instants that gives rise to Zeno's paradox

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