What unconventional books helped you with growth hacking and marketing acquisition 101 strategies?

Love Josh Fechter’s answer. Really great recommendations. There are a couple unconventional books that have really helped shape how I look at marketing and strategy. These are definitely not the classic startups books.

Art of War - The lessons in this book helped shape how I think about strategy. While it is about war the concepts apply well to growth as you will always have competition, high levels of uncertainty, and less than ideal resources.

Antifragile - This book gave me a really great perspective and an appreciation for what causes fragility. By understanding and learning to identify fragility you can better predict points of failure. Additionally, the concepts help me think systematically when building strategies that not just endure in the presence of change but benefit from them. For customer acquisition this is incredibly powerful.