I saw the explanation and I don't buy it. In pretty much every occasion that I've found a textbook valuable, I've found lectures by the authors far more valuab

I saw the explanation and I don't buy it. In pretty much every occasion that I've found a textbook valuable, I've found lectures by the authors far more valuable. David Mackay's lectures are incredible and go much further in explaining the material in an understandable fashion than his excellent book "Information Theory, Inference and Learning Algorithms".