I would like to add that another of the biggest enemies of progress is ignorance in general, the lack of knowledge can be used against us for other people to manipulate us to do their bidding and use our time and resources on something which does not benefit us at all.
Ignorant is what I thought people will actually talk more about because to me I see it more as an element that can make someone seeing an opportunity as a bad thing, though ignorance can be good and sometimes bad because someone could put there money on a place they may never recover it again but because of ignorance of not desiring to take the opportunity based on the inappropriate knowledge for it makes them to escape it, that is were I feel ignorance can have an advantage, but when it works the person has missed the opportunity then it becomes a prevention of success, so the vices behind the scene is what a lot of people do not want to open because the package has good and the bad.