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Order of Collections
Order of What If? Non-Fiction Books
| What If? Serious Scientific Answers to Absurd Hypothetical Questions | (2014) | Hardcover Paperback Kindle |
| What If? 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions | (2022) | Hardcover Paperback Kindle |
Order of Non-Fiction Books
| Thing Explainer: Complicated Stuff in Simple Words | (2015) | Hardcover Paperback Kindle |
| How To: Absurd Scientific Advice for Common Real-World Problems | (2019) | Hardcover Paperback Kindle |
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