Citing from Wikipedia is the most unreliable source of knowledge. From the student perspective, (and often, unfortunately, in more advanced stages) literary work customarily done in such a way that it is not based on the available literature of the state of science, including gaps and contradictions, it is shown, but that one out looking at his work, the "matching" item or text. Since it may already time, that a subject's own contradictory literature omitted or cites a section from a source, no one has understood the background of the work. This is particularly problematic when ...