II - The Non-observable Universe and a General Classification of Nature's Phenomena
A rare lenticular cloud takes the shape of an UFO. by Ademir Xavier Read the full article here (via SKL repository). Previous Post: "The Non-Observable Universe I" . Any discussions about the periodicity of natural occurrences must also take into account the fact that events may not be reproducible. In fact, what is a reproducible event? Both periodic or sporadic event may be involved, observable or not. In summary: Definition 3 1. Reproducible phenomena: some information is known about their occurrence conditions so as to render them repeatable. E.g.: chemical reactions; 2. Irreproducible phenomena: events that cannot be reproduced at will either by knowing their occurrence conditions or because such conditions are themselves irreproducible. Ex.: E.g. climate or weather phenomena. It is easy to see that, in order to be reproducible, it is necessary (but not sufficient) to know certain conditions. Reproducibility is associated to the ability to control ...