


He also was living in the Soho neighborhood of London when a particularly virulent outbreak of cholera occurred.Īll the received medical wisdom of the time assumed that the disease was caused by some sort of airborne miasma, encouraged by the overcrowding and pestilent environment of this teeming area. One of the first physicians to understand and use chloroform and ether, he became a physician to Queen Victoria, helping her deliver her innumerable children with far less pain. He was born poor in Northern England and had to get an education by force of intellect and character. John Snow was a true outsider to Victorian professional medicine. The excitement of the book is how one man understood how to cure this plague and how he used a new way to display information to do so. The book is about something as messy as information, excrement, and how its disposal caused an outbreak of cholera in Victorian London.

The Ghost Map shows how information actually works in the world. In my days as an Information management consultant, I believed, as did all my colleagues, that if people were just shown correct and feasible information they would act in accordance with it – they would follow where it led.
