Similar to the last section of the book, there is a lot of information to take in and a lot of review from embryology and biology. Thankfully those two classes helped me get a better understanding and grasp on the knowledge discussed in the book. I like how learning from Shubin is different than learning from other books. Shubin lets the reader take a break from all the information and will acknowledge you about his stories/adventures, making a little more interesting to learn out of. This portion of the book showed me how intricate and complex our bodies processes things like vision and smell. It gave me a more in-depth view of how eyes of humans (as well as other creatures) work on a molecular level. Before I was not familiar with the different types of molecules and genes that take function in our eyeballs. The part that interested me the most was how odor genes and receptors function throughout the human and fish body; also how they help us link to other fish, amphibians, and mammals. It made me wonder how us humans and other animals have different types of odor genes spawn and develop. Also, if it would be possible to insert them into humans and other organisms so that they can indicate and manipulate other odors or are some odors only functional with certain types of receptors?