“…The great Aristotle in his famous "Metaphysics" wrote: "Investigating the truth is difficult in one respect, easy in another. This is evident from the fact that no one can achieve it properly, but also does not suffer complete failure, and everyone says something about nature and one after another, it is true, adds nothing or little to the truth, but when all this is added up, it turns out A significant amount" Quoting this from my article with students [37], I want to say to you, the reader: dare, create, do not be afraid -nothing is lost in vain. Thus said Aristotle.…”