How a heavy mallet solves a complex problem

You might have seen that the slogan we have up on our website is this: "The common ground between complex problems and simple solutions." In explaining what this means we often refer to the use of an efficiency rudder used to improve the turning circle of ships (read about it here). In a similar light, I've discovered the story of John Snow as an example of how a simple solution can solve a complex problem ... In 1854, cholera broke out in [...]