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Strange that September 31st sees so few births, given that the month is the most popular.

• zeitg3ist 9y ago
  September has 30 days...
  • ak39 9y ago
    I work a lot with visualisation. It becomes interesting when you release a chart to end users only to get feedback such as lurcio's. At first I would simply correct and "educate" the end user how to interpret the charts. Recently though I have begun to "register" such types of questions and misunderstandings. I now actively determine WHY the end user made such a seemingly simple error in usage. And more than likely, I've concluded, it's the fault in the presentation of the chart than it is of the user's understanding of it. It is not easy to create data visualisations that do not mislead! In this case, we as users are introduced to a gradual shading of a pink/maroon palette of calendar dates. The shading goes from dark (almost black) to light pink (almost white). So both white and black squares are tacitly presented as features. The mind extrapolates this. Using white for an invalid date is bound to create confusion to a user not paying attention. And charts are always sold to end users as "you relax, we've done the thinking, just consume this easy picture". As users, our guard is down by invitation! I'd make all the invalid dates a colour from a completely different palette or strikingly different colour (eg. gray, yellow or green) to stand out clearly, indicating immediately that you are looking at invalid areas of the chart.