Reading with interest about knowledge and what it is. Haven't been so deep in philosophy before but find it a very interesting question.
Should we be concerned with a theory of knowing rather than theories of knowledge? Ernst von Glaserfield's 2500 year summary of sceptical thought provides a background to what he describes as radical constructivism.
Is knowledge about a thing or does it emerge from the interactions we have (without ever being a thing)? Stephen Downes goes deep into the Emergentist Alternative and builds the case for connectivism and "e-learning 2.0".