Another essay. This one is geared towards making sure that data presentations address the correct questions and show the data in a way that allows for a quick and accurate analysis of the given data set. The essay features a combination of original data presentations (such as documents from the Challenger accident) and remakes of the presentations that allow for a better understanding of the data.
Interesting tidbit: Data does not bear out the famous conclusion of the 1854 London Cholera Epidemic. Namely, new cases cholera were already on the decline when Snow removed the infamous water-pump handle.