| http://www.w3.org/ns/prov#value | - Albert Einstein used to do what he called 'thought experiments', or mind games, to help him envision things that had no 'seeable' versions here on the home planet - you can only do empirical experiments to a certain point. (Others 'envision' things too, of course, such as people who see giant green spiders crawling on walls if they have had too much or not enough of their desired recreational chem
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