The quotes and analysis are clearly chosen as if a smiling but serious friend was trying to make history interesting and related to today. They present their own opinions. This helps keep the book interesting. Caffeine is the only addictive psychoactive substance that has overcome resistance and disapproval around the world to the extent that it is freely available almost everywhere, unregulated, sold without license, offered over the counter in tablet and capsule form, and even added to beverages intended for children . The chapter heads are handwritten in a tight jittery style, I guess to look like someone who just drank a few cups of coffee.
Chapters often start with a quote or two.
The main benefit of this cacao is a beverage which they make called Chocolate, which is a crazy thing valued in that country. They reproduce illustrations of NASA's tests on the effects of various drugs on spiders, mentioned in the New Yorker in 1995. The somewhat clean webs created after being subjected to marijuana and benzedrine contrast to the weird ones made on caffeine. The New Yorker assumed it relates to how error-prone some people get on coffee, but the book points out that caffeine is a neurotoxin to insects, and that it probably developed in plants as a natural defense mechanism. They offer much discussion of caffeine use in children.