Back in the days…
Let’s go back to half way the 19th century during the cholera outbreak causing thousands of deaths. An epidemiologist in London – Dr. John Snow – had an idea how cholera was being spread and, most importantly, how to stop it. To substantiate the idea, he marked each death on a city map. This made clear that all victims were from the same area and when asking around it became clear that they all used to drink water from the same pump. He took his findings to the city leaders and they understood the problem – the pump was situated in an area with no sewage system. Today, instead of using pen and paper, we use computers and dashboards to tell our stories and show the retrieved data.
Same trick, new technology.