The relation between two similar phenomena might be very simple. They may be linked directly. For instance, A sound of a broken glass may be directly connected to a braking glass. But it can be connected in more complex way, for instance there may be some computer that create a breaking sound, whenever I see a breaking glass. Or this connection may be correct until some time, ans it may be wrong in some future time<ref>[http://www.amazon.com/Fact-Fiction-Forecast-Fourth-Edition/dp/0674290712 Goodman, N., & Putnam, H. (1983). Fact, Fiction, and Forecast, Fourth Edition (p. 160). Harvard University Press.]</ref>. The reason to chose the most simple connection is beacause the number of available solutions possible relations between a sound and a breaking glass are infinite.There fore Therefore for reasons of effective storgestorage, we will use the simplest solutionavilable, that describes which will be '''all connections so far observedbreaking glasses has this specific sound''', but . But we will try to constantly refute it, to see if it still holds.