
A thought experiment or Gedankenexperiment (from German) considers some hypothesis, theory, or principle for the purpose of thinking through its consequences. Given the structure of the experiment, it may or may not be possible to actually perform it, and if it can be performed, there need be no intention of any kind to actually perform the experi...
Found on
http://en.wikipedia.org/wiki/Thought_experiment

(from the article `Physical Sciences`) ...that an external reality exists, independent of observation. This belief, however, ran counter to some of the predictions of quantum mechanics. ... ...quantum theory, not relativity. In fact, Einstein would engage in a series of historic private debates with Niels Bohr, originator of the Bohr .....
Found on
http://www.britannica.com/eb/a-z/t/43
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