First 200 get 20% annual premium membership of Brilliant: https://brilliant.org/Polymatter Thanks to Dave for the video idea! Go watch his excellent startup pitch: https://www.youtube.com/watch?v=pVsXf9wH7Q0 Patreon: https://patreon.com/polymatter Twitter: https://twitter.com/polymatters Pins & T-Shirts: https://standard.tv/collections/polymatter Reddit: https://reddit.com/r/PolyMatter This includes a paid sponsorship which had no part in the writing, editing, or production of the rest of the video. Music by Epidemic Sound: http://epidemicsound.com/ Full list of sources: https://pastebin.com/3LFB2Bqh