All you need is to ask right questions if you want to know truth. And to ask right questions you need to rely on the true values and true definitions. However, the definitions you need to proceed with caution, because some definitions describe things invented by man, and not found in nature such as democracy or any other political system. But there are also definitions of things and phenomena that occur in nature, and here the problems begin, because our perception of the world has an impact on the definition of what we create. Today probably could try to rely on a number of scientific definitions, but is the science behind 10 years does not change or expand the description of those things or phenomena? Probably yes, so doubt as to the correctness of the many solutions proposed by science are justified. Today, many people implicitly believe everything what reads on the condition that the article is a signature of the authority with the academic title. But is not this be against science? After all, if someone wants to challenge Einstein's theory or the theory of evolution is the first must doubt the correctness of the theory, and then ask the right questions that supporters of both theories will not be able to answer.