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Pros & Cons
Pros
Sagan relates the history of brain evolution and posits a future wherw macine learning and ai may allow us to communicate with beings in other galaxies. Sometimes sagan reaches a bit far but overall the book is a treat.
This book is concise, well-written, and compelling. As a scientific novel, the book should produce new and thought provoking philosophies.
Sagan's book looks at the two layers of the human the cerebral cortex and the limbic system. The r complex, part of the ‘reptilian brain’, is responsible for instinctive behavior. Sagan believes that we should encourage the operation of our reptilian ... Read More
Cons
The 'gill slit' in an embryo is not a gill, but a slit in the spinal cord. The spinal cord is longer than the body, forcing the body to curl and flexing the neck area forward.
Highlights
Quality
The quality of the library edition is great and recommended for people who travel.
Really happy with the copy of this book.
Sagan believes that we should encourage the operation of our reptilian brain, constantly tempering its excesses with the logica... Read More
Competitiveness
Sagan relates the history of brain evolution and posits a future wherw macine learning and ai may allow us to communicate with ... Read More
Overview
- How are reviewers describing this item?
human, good and great. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has determined that the review content quality is high and informative.
- Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 1.
- Our engine has analyzed and discovered that 75.0% of the reviews are reliable.
- This product had a total of 1,531 reviews as of our last analysis date on Jan 4 2024.
Helpful InsightsBETA
Posted by a reviewer on Amazon
Though this may be a bit of a case of when it was written
Posted by a reviewer on Amazon
One of the late carl sagan’s hallmark qualities was to engage in speculation to a degree that was unusual for a rigorous scientist
Posted by a reviewer on Amazon
Sagan advances a chilling and all too likely hypothesis that humans killed off apes who they thought came dangerously close to mimicking their linguistic capabilities
Posted by a reviewer on Amazon
Given how closely language is tied to human intelligence it then ensured that humans would be the dominant species on the planet chimps gorillas and orangutans were presumably saved because they lived deep inside the inaccessible jungle
Posted by a reviewer on Amazon
Coming on the heels of this comparison is sagan’s commonsense in my opinion take on abortion he tries to reach a compromise by arguing that it should be unethical to kill a human fetus after it develops the first rudiments of a cerebral cortex presumably the one thing that distinguished humanity from other species
Posted by a reviewer on Amazon
Later work would probably cast some doubt on this assertion since reptiles have also now been found to possess cortical cells
Posted by a reviewer on Amazon
Sagan’s fulcrum for this discussion is a theory by psychiatrist paul mclean who divided the brain into three parts the “triune brain”
Posted by a reviewer on Amazon
The second layer is the limbic system containing structures like the amygdala which modulate emotions like anxiety
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