In 2012, Vi Hart made this video giving "9.999… reasons that .999… = 1" She also made a video of bad proofs why .999… does not equal 1.
There's some interesting discussion about it at TYWKIWDBI.
Different ways to prove that .999… = 1
Adam Savage explains an object that shouldn't exist but does (video)
According to Wolfram MathWorld, the Boy surface in geometry "is a nonorientable surface that is one possible parametrization of the surface obtained by sewing a Möbius strip to the edge… READ THE REST
Flatland is one of my favorite Math(ish) books
I love books about math, especially ones that aren't textbooks but rather about the history, philosophy, and wonder of mathematics. In the most recent issue of my newsletter, The Magnet,… READ THE REST
"This statement is false": animated explainer of Gödel's Incompleteness Theorem
"This statement is false." Is that statement true then? In 1931, Kurt Gödel published his first Incompleteness Theorem showing that no logical system can be entirely proven. The Incompleteness Theorems were… READ THE REST
Save $169 on a lifetime license to Microsoft Windows 11 Pro and never look back
TL;DR: Revamp your digital world with this incredible lifetime license to Microsoft Windows 11 Pro, with its seamless interface and top-notch security, for only $29.97 (Reg. $199) until 11:59 PM on 1/07.… READ THE REST
Upgrade your tech for the new year with this refurbished iPad Pro, less than half price right now
TL;DR: Save over $350 on a refurbished Apple iPad Pro 10.5" 256GB, plus a free accessories bundle, with this sweet deal on sale for just $315.99 right now. Tech fans, it's time… READ THE REST
Make your rockstar dreams a reality for only $15.97 with this Guitar Lessons Training Bundle
TL;DR: The perfect last-minute holiday gift for an aspiring rocker, the 2024 Guitar Lessons Training Bundle is only $15.97 (Reg. $480) until 11:59 PM on 12/25. It's really never too late to make… READ THE REST
