), Crick focuses on the primate visual system and breaks down the prerequisites for conscious experience into several broad subconditions, including some sort of short-term memory and attention mechanism.

The book then delves into a brief overview of many neuroscientific topics, ranging from a survey of how neurons function to a description of basic neural circuits and their artificial equivalents.

Also, here he takes the opportunity to make suggestions for further experiments that could provide empirical basis for further understanding about human consciousness and includes a brief addendum on several topics he glossed over, like free will.

Crick's view of this relationship was that religions can be wrong about scientific matters and that part of what science does is to confront the errors that exist within religious traditions.

Neurologist and Nobel Laureate Gerald Edelman believes that neural Darwinism is a more satisfactory explanation for the emergence of complex intelligence in humans.