Because all efforts to control it completely must lead to tyranny; that is, leading to the infinite power of the human factor – of the whims of a group of people, or even just one person. The ocean is calling and I must go Swimming poster. But does science – the opposite of capricious whims – control the human factor? Certainly biology and psychology can be solved, or will soon be solved, “the problem of human improvement”. But those who try to do this are forced to destroy the objectivity of science, and thus destroy science itself, because both are based on the free competition of thought; ie on the basis of freedom.