Don’t confuse scientific propaganda with scientific popularization. These are two different things (conditionally speaking, of course). Popularization, as a rule, brings science down to a lower level; it simplifies and at times profanes science. It tells you news in your leisure time, so to say. To a certain extent it is useful, but to a very small extent only. But propaganda of knowledge should relay knowledge that is actually applicable, should be maintained at a very high level.