Predictive Processing

I came across a review of the book "Surfing Uncertainty" by Andy Clark.  The review and subsequent comments were a good and challenging read. 

The key insight: the brain is a multi-layer prediction machine. All neural processing consists of two streams: a bottom-up stream of sense data, and a top-down stream of predictions. These streams interface at each level of processing, comparing themselves to each other and adjusting themselves as necessary.

 Two key ideas to catch: predictive processing and the concept of embodied cognition.  The complete review is at Slate Star Codex.  RTWT and comment please.

HT: Assistant Village Idiot