About as well done as you could hope for such a specific aspect that doesn’t feature prominently, or at all, in most UFO reports. A real first-of-it’s-kind as far as I’m aware, so that’s neat. The final two chapters are definitely the best ones. What exactly this study adds to the overall puzzle of these phenomena, I’m not sure, which is why I didn’t rate it 5 stars. I just know that I side with the ancient advice not to accept food and drink offerings from these entities (especially fairies) even though it apparently worked out ok (and even quite well) for some people who did. Most of the offerings (again, especially from the damn fairies) are said to be deceptive and only simulacra anyway. I really just endorse an uncooperative and distrustful stance in the face of these entities in general… dey ain’t honest enuff.