Putting the glass makers together caused them to learn more from each other. I think of it like having a bag of marbles; if all the marbles are the same color then that is all you will get with no change; however, if you have multiple colors in the bag the possibilities of differences become larger. The glass makers being slightly spread out gave them some possibilities to mix together, but not nearly as many as when they were all isolated together. Their proximity to each other increased the knowledge gained from other's experiences as well as their own experiences. Another example of this progression from unexpected progression is in the actions of the physician John Snow. He created a map of the deaths he encountered from Cholera. A map
