He argues that educational 'theory' is a variety of ways of thinking about education, and calling it 'theory' is an attempt to make our endeavors sound more like 'proper' scientific thinking, but in reality stifles thinking. Educational thinking should be more 'nuanced', creative and tentative if it is to help us understand more about education. He even suggests a rather interesting list of alternative thinking words to use instead!
Thomas, G. (2007). Education and Theory: Strangers in
Paradigms. Buckingham, UK: Open University Press.