Thought Glass explores origins and behaviors while blending physical images with computer graphics. It is performed in one take. TWITTER: https://twitter.com/VsauceTwo *** SOURCES AND LINKS ** Humors And Bloodletting History http://bit.ly/1oxOgmH Trepanning History http://bit.ly/1oxOdHL Enema History http://bit.ly/XkHWUs http://bit.ly/1rc2fRh http://bit.ly/1sZD5np Great Plague Of London 1665 http://bit.ly/VpVQml http://bit.ly/XkHXI6 http://1.usa.gov/1vNVabB ************************************** Vsauce Links T-Shirts: http://www.districtlines.com/vsauce Facebook: http://on.fb.me/V62afx Kevin Lieber Links Website: http://www.kevinlieber.com/ Instagram: http://instagram.com/kevlieber Twitter: https://twitter.com/kevinlieber Vsauce: null Vsauce2: null Vsauce3: null WEsauce: null