![Matt Parker on Twitter: "Well, it's that classic publisher move of putting a book up for pre-sale before I've finished writing it… which is motivating at least. Humble Pi: A Comedy of Matt Parker on Twitter: "Well, it's that classic publisher move of putting a book up for pre-sale before I've finished writing it… which is motivating at least. Humble Pi: A Comedy of](https://pbs.twimg.com/media/DdPcA7vWkAEgMtF.jpg)
Matt Parker on Twitter: "Well, it's that classic publisher move of putting a book up for pre-sale before I've finished writing it… which is motivating at least. Humble Pi: A Comedy of
![Matt Parker on Twitter: "I. I don't know how to feel about this. https://t.co/Y5a6ddB0PJ #humblepi @HumblePi_0x03c0… " Matt Parker on Twitter: "I. I don't know how to feel about this. https://t.co/Y5a6ddB0PJ #humblepi @HumblePi_0x03c0… "](https://pbs.twimg.com/media/EOwiHIqWoAIxIG1.jpg)
Matt Parker on Twitter: "I. I don't know how to feel about this. https://t.co/Y5a6ddB0PJ #humblepi @HumblePi_0x03c0… "
![Things to Make and Do in the Fourth Dimension: A Mathematician's Journey Through Narcissistic Numbers, Optimal Dating Algorithms, at Least Two Kinds of Infinity, and More - Kindle edition by Parker, Matt. Things to Make and Do in the Fourth Dimension: A Mathematician's Journey Through Narcissistic Numbers, Optimal Dating Algorithms, at Least Two Kinds of Infinity, and More - Kindle edition by Parker, Matt.](https://m.media-amazon.com/images/I/51qBZXUr1ML.jpg)
Things to Make and Do in the Fourth Dimension: A Mathematician's Journey Through Narcissistic Numbers, Optimal Dating Algorithms, at Least Two Kinds of Infinity, and More - Kindle edition by Parker, Matt.
![Matt Parker on Twitter: "And I'm well aware this is not the biggest problem with Amazon. So do purchase from an independent retailer if you can. Or solve both problems at once Matt Parker on Twitter: "And I'm well aware this is not the biggest problem with Amazon. So do purchase from an independent retailer if you can. Or solve both problems at once](https://pbs.twimg.com/media/EooaMisXEAAipS4.jpg)
Matt Parker on Twitter: "And I'm well aware this is not the biggest problem with Amazon. So do purchase from an independent retailer if you can. Or solve both problems at once
![The Real Estate Sales Secret: What Top Real Estate Listing Agents Do Today To Sell Tomorrow (Black & White Version) by Matt Parker, Paperback | Barnes & Noble® The Real Estate Sales Secret: What Top Real Estate Listing Agents Do Today To Sell Tomorrow (Black & White Version) by Matt Parker, Paperback | Barnes & Noble®](https://prodimage.images-bn.com/pimages/9780996300926_p0_v1_s550x406.jpg)