The first version of this work, published in 2003, appeared in a modest article in some electronic magazine of the time, and twenty years have passed since then, and today we are in the middle of 2022. The author could never have imagined that endless amount of messages, sent by people interested in such a specialized subject, within the complexity of a critical study, focused on the polysemy that hides the simple word Paradigm. This term can be found...