C.G.P. Grey explains and such as @Rulesthewaves would do well to watch and learn.
I know I've posted this video before but it's damned interesting!
I am not a sheep, I have my own mind
I have had enough of being told what and how to think
Whilst we are still allowed the remnants of free speech,
I will speak out.
I also reserve the right to discuss less controversial matters should I feel the urge.