Another dot in the blogosphere?

Poor visualisation

Posted on: January 8, 2018

The chart embedded in this tweet is a good example of “just because you can, does not mean you should”.

More specifically, just because you think you can create a chart does not mean you should.

A chart should make obvious what is difficult to explain in words. If the chart does not do this, then do not use it or design a better one.

The logical problem with chart in the tweet that the visuals counter the intended meaning. A small chance of winning (1 in 14 million) is tiny, but it was represented by a large block. To illustrate the very low likelihood of winning the top gambling prize, the block should be tiny.

One could also critique the choice of fonts, the colours of the bars, the use of red font against a black background, etc.

Why harp on a seemingly harmless chart?

The chart is an example of what not to do when designing visuals for effective communication. It is also fodder for a module on critical thinking.

If schooling has not taught you to design better visuals, then continued education in your working adult life offers you some harsh lessons. This first lesson is free and could be worth more than the top Toto prize.

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