Chapter 6: Pharmacology
Animals like to get high. Some libertarian guy wrote handbooks on how to make dozens of books and also happened to consult with the DEA and law enforcement. It was very common for people to create drugs they also tested on themselves. Plants that produce drugs co evolve with humans. The desire to change ones state of mind that some consider it the fourth drive besides sex, food, and water. Drugs have a evolutionary rule of depatterning.
"The ego is just a network.