Positivism elements are considers of lessor import knowing through relationship, experience or observation of the environment. Unless one is counting things relevant to those areas they are of little concern to the educator trying to improve the target (student).
No wonder I have difficulty communicating with some of my peers as they are sure that what I offer and the theories of practice I teach have no basis in reality or knowledge. Tom Srtic is the man to speak with or read if you are looking for substantial insight into this (http://soe.ku.edu/Tom-Skrtic/).
Sadness washes over me as I see clearly that I am speaking a foreign language and inviting people into a strange culture when I give evidence that suggests the source of teaching is to be found in relationships, environment, cultures and the mix of all of those. This is good news however as I now have been reminded of a plethora of resources that can be offered to teacher candidates and injected into the academy at multiple points of entry.