Book Chapter Vision Marr 1982

"…one favorite is that the brain is quite different from a computer because one is parallel and the other serial. The answer to this, of course, is that the distinction between serial and parallel is a distinction at the level of algorithm; it is not fundamental at all—anything programmed in parallel can be rewritten serially. " This is an obvious point when put this clearly, in terms of different levels. I have to admit I still get tripped up confounding algorithm and implementation. The problem he is addressing here reflects many misunderstandings about distributed systems. A 'distributed' network can support 'centralized' dynamics.