http://web.media.mit.edu/~stefan/mas890/downloads/BeyondBeingThere.pdf https://neiu.desire2learn.com/d2l/le/content/2934476/viewContent/1094417/View
https://www.youtube.com/watch?v=ppnRQD06ggY http://spectrum.ieee.org/automaton/robotics/humanoids/the-uncanny-valley
http://www.asktog.com/basics/firstPrinciples.html