One of the books I think about often is Factfulness by Hans Rosling. One of the lessons in that book is not to assume you understand a trend by looking only at a portion of a graph.
When we only have a few data points, we often assume that the relationship between them is going to continue. So if things are trending downward, we assume that downward trend will persist into the future.
Notice that assumption, then call it into question. Why?
Continue reading “Extend the Graph”
