“Understanding scientific texts requires a long period of specialized preparation and the use of a particular, professional language. Science is aimed at a restricted circle of specialists. Ideological texts are addressed to an entire population, regardless of profession and differences in educational level. To “understand” them (or more precisely to assimilate them), there is no need to undergo special preparation. It is enough to refer to examples from daily life to clarify this or that obscure passage. p. 286”