In health there are well-established protocols that govern the introduction of any new drug or treatment. Of major consideration is the notion of doing no harm. In education there are no such controls and plenty of vested interests keen to see the adoption of new strategies and resources for a variety of ideological and financial reasons.
Teachers need to be critical consumers of research – as with medicine, lives are also at stake – yet with the best will in the world and without the knowledge and time to do so, decisions may be made to adopt new approaches that are not only ineffectual, but can actually do harm. A case in point is learning styles.