You now know 7 amazing new things and that’s cooler than magic! Get the CrunchLabs Build Box! Two FREE boxes at https://crunchlabs.com/teaser I started a company called CrunchLabs, where we build a toy together, and then I teach you all the juicy physics of how it works. So if you want to learn to think like an engineer and have a really fun time doing it, check out the current promotion where yo
![Testing If You Can Blow Your Own Sail](https://cdn-ak-scissors.b.st-hatena.com/image/square/c2ea1c91b9da51bb4d5b122ea346408bc49ae7ad/height=288;version=1;width=512/https%3A%2F%2Fi.ytimg.com%2Fvi%2FM7-h3FO-KKo%2Fhqdefault.jpg)