I really liked the beginning but then the story developed into something I didn't find that interesting. Some threads weren't executed to their full potential or were lost or abandoned along the way. Sometimes, it even felt like Hank Green only made certain decisions in order to get a bigger point across.
To be frank, the second half of the book was rather a quite mess in my opinion.

Long story short, I enjoyed the overall concept of A Beautifully Foolish Endeavour but I did not like the book as a continuation of An Absolutely Remarkable Thing.