You can learn a great deal about the history of innovation by examining great ideas that changed the world. - Johnson page 72
As said in a previous post, we can learn a lot from the ideas that have risen before. We learn from the mistakes and the achievements others have made in the past. This way we can learn what works in our society and what does not. Most great ideas are those that have a large impact in the world. It is important that we take into account that in order for us to know this, we have to have access to the ideas that were brought up before. This could lead to something good or bad depending on how people take it. I believe however, that ideas are to be shared and discussed so we know if it something better left untouched.