ABSTRACT
This chapter explores that floating around in the mix so far when considering professional thinking are expert knowledge, tacit knowledge, theoretical knowledge and craft knowledge. There are a number of perspectives on how to think about these but, drawing on Schn, Higgs, Stephen Kemmis, and Sternberg and Horvath. Polanyi considers tacit knowledge to be those things that people know how to do but can't put into language. It is close to Higgs concept of professional craft knowledge, which means knowing how to do something as opposed to knowing that. Theoretical knowledge knowing that, equating to Higgs propositional knowledge is knowledge that, in Donald Schon's terms, developed in the university, and professionals make use of in their practice. Kemmis discusses practical reasoning, which is reasoning about uncertain practical situations. He take on this is framed more discursively, that is historical and social processes which are extra-individual are as much at play as individual processes in the embodiment of such practical reasoning.
