Great video about the ignorant of the general public. The problem goes much deeper than the Roslings suggested though as people in power to make decisions for the masses are as ignorant if not worse. In my opinion, the most important thing to take away from the video for traders is to understand that the world is changing very fast. Preconceived beliefs coming from many years ago may not be applicable to the world we are living in today.
Keeping with the spirit of the video, i predict what they suggested in the video to eliminate ignorance among the majority of the people will fail spectacularly, at least for now. For majority of the people whose age right now is older than 25 years old, their ability to accept ideas that are completely contradicting their deeply hardwired beliefs in world view is very low. The real hope is a long term battle to educate the younger generations so that they do not share the same ignorance like their parents and grandparents.