MacIntyre’s point, to return to the example of physics, is that Fred as a physics school teacher is himself engaged in the practice of physics which is, in a sense, a lot ‘bigger’ than simply what goes on in the school classroom. Physics also, of course, takes place in university departments where not only is existing knowledge transmitted to students, but experimental and theoretical work takes place to extend the boundaries of that knowledge. In addition, the application of physics takes place in commercial, military, and other settings. Taken all together, this is the practice of physics.
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