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Over the past decades research on learning has become more diverse and complex. The concern expressed by Alexander, Schallert, and Reynolds (2009 Alexander, P. A., Schallert, D. L. and Reynolds, R. E. 2009. What is learning anyway? A topographical perspective considered. Educational Psychologist, 44: 176–192. this issue[Taylor differences that make them incompatible in important respects, for instance, with respect to their units of analysis. An acceptance of incompatibilities in perspectives is not necessarily a problem. In fact, such a situation may, if the debates are grounded in a mutual acceptance of the diverse manners in which knowing and learning may be theorized, give us a richer frame of reference from which to analyze learning in its various manifestations in complex societies.
Roger Säljö (Fri,) studied this question.