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Acknowledgments

I would like to express my warm thanks to everyone who has contributed to this book in one way or another.

First, my children, for asking so many questions. My wife, Gabrielė, for her thorough revisions, detailed feedback, and artistic guidance; for giving me time to write and code; and for filling our home with music and love.

Thanks also to Gerardo Restrepo for drawing the beautiful cover, and to Hamilton Carrillo and Eleonora Stassi for reading an early draft of the book and offering valuable feedback and corrections.

We often take it for granted, but the world is a better place thanks to the amazing work and dedication of the people who create open-source content and software, from Wikipedia to Blender to . I wrote this book using Quarto and used Python and TikZ to generate the figures. I also used LDraw and Blender to create rendering of the LEGO blocks.

My friend Fabio Stassi, who has written several beautiful books, once told me that literature is always secondhand. That’s why I also want to thank all the wonderful authors who have inspired me through their writing and ideas.

Thank you for reading this book and providing feedback. We hope you enjoy it as much as we enjoyed creating and playing with it.