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From: Osher Doctorow on 13 Aug 2010 08:04 From Osher Doctorow In literature on Resonances, one often reads about increasing Energy or other variables which, although theoretically unbounded, are "in practice usually limited by some factors". Yet this manner of thinking or stating is somewhat similar to saying that "While the water is dangerous, you usually do not fall into the water." If a variable increases, then the fact that it "usually" does not increase very much is more emotionally than physically "reassuring". Black holes are certainly "extreme", and we usually do not fall into black holes, but in fact we could conjecture or hypothesize black holes EVEN WITHOUT RELATIVITY by examining meteorology and the Earth, which have quite a few "dangerous" and "rarely reached" levels of variables including: 1) Tropical Cyclone(s) (see Wikipedia article online by that name) 2) Tornado (see Wikipedia similarly) 3) Earthquakes. Under Tornadoes, we also have Land Spouts, Multiple Vortex Tornadoes, Waterspouts, each of which has an online article by Wikipedia and others. How "extreme" are Tornadoes? An E5 level Tornado can lift skyscraper buildings off their foundations. Curiously, most of them are associated with the USA, which is arguably a source of the myth that things are usually not dangerous! Earthquakes, which in turn can be associated with Tsunamis, are "obviously" in the dangerous category and in the "enormous destruction" and "enormous power" category - sometimes, but too often. Nevertheless, because they are "meteorological" or "geophysical", they conveniently get swept under the rug so to speak in enumerating physical "comfortably bounded" objects. To postulate a Black Hole based on the above real extremes may seem implausible - only if the idea of postulating that the Universe outside the Earth has similarities to the Earth in some respects. In fact, in speaking of the "Big Bang", we already postulate a more generalized category that includes Black Holes under the name "Singularity". But surely SOMETHING excludes "singularities"? Not even theoretical mathematics excludes singularities - even among the simplest types such as: 4) Complex Variables (poles) 5) Real Variables (division by 0) 6) Algebra (square roots of negatives among reals, division by 0, etc.). Ultimately, what appears to enable events and objects of the above type is: 7) Unbounded objects or sets/events or variables (A ' in the context of A being bounded and its complement A ' unbounded in an unbounded Universe, in the notation of the previous posts). Osher Doctorow |