Where specific technical practices are to be introduced into a culture or a part of a society which has not hitherto used them, it is desirable to strip these technical practices of as many extraneous cultural accretions (from the lands of origin) as possible. This recommendation applies to such varied matters as mass production, methods of immunization, development of alphabets for unwritten languages, methods of antisepsis or of sanitation, etc. It is realized that the technologies and inventions of modern science are themselves the outgrowth of a very particular historically limited type of culture – a culture in which the focus of interest has been upon the observable, the repeatable, the measurable, upon using the external world as a model even when processes within the body were concerned.