Interesting video.
https://www.youtube.com/watch?v=8xONZcBJh5A&feature=g-vrec
...Did have a chuckle when the author says " let's say you have someone who is not very bright..."
https://www.youtube.com/watch?v=8xONZcBJh5A&feature=g-vrec
...Did have a chuckle when the author says " let's say you have someone who is not very bright..."