Stephen Downes

I learned this stuff in grad school when I was studying Fred Dretske's Knowlegedge And The Flow Of Information and recognizedIt immediately when I later encountered M.G. Moore's theory of transactional distance. It's the foundation of instructivist learning theories. This 'introduction' goes into a lot of detail, but will reward a careful reading. I didn't think information theory is the foundation of knowledge, but it's still useful to know.