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Measurement: ideas and frameworks explained

A collection of ideas, frameworks and techniques related to Measurement, explained clearly so they are easy to understand and share.

What is systolic and diastolic blood pressure — diagram showing heart contraction (systolic) and relaxation (diastolic) with 120/80 example and pressure graph.Systolic and Diastolic Blood PressureA fisherman illustrates the parable of the fishing net by concluding a minimum size of fish because they never see any smaller in their nets — you get what you measureYou get what you measureAnalytics Maturity illustration: A young character is very happy, sat at their makeshift lemonade stand next to the sidewalk. When they close their stand, our young entrepreneur can assess their performance today using hindsight and insight to inform preparation through foresight for next weekend. Analytics maturityNet Promoter Score illustration: How to calculate NPS from the spectrum of responses to the question "How likely are you to recommend us to a friend?"Net Promoter ScoreWhat is the scale of solar system distances explained: show how big is the solar system, what is an astronomical unit and the distances between planetsSolar system planets: how big is the solar system?Campbell's law illustrated with examples from elections and leading to fake news and a crackdown on crime distorting how it is reported and measuredCampbell’s lawWhat is the Cobra Effect? A visual explanation showing how a plan to pay for dead cobras in India backfired when people began breeding cobras to claim the reward.The Cobra EffectWhat is the coastline paradox explained - meaning the length changes depending on the size of your ruler, with Great Britain's coastline as an exampleThe coastline paradoxGoodhart's law illustration showing a manager frustrated by 1000's of tiny nails when measuring on number of nails made, and pulling their hair out when presented with giant nails when measuring on weightGoodhart’s Law: when a measure becomes a target, it ceases to be a good measure.Bortle ScaleApe indexMicrolife: 30 mins of TV soap, 2 cigarettes, 7 units of alcoholMicrolife: The unit of lifeMicromort: 1 day of living, 20 miles by bike, 250 miles by carMicromort: The unit of deathUnderstanding reliability and validityWhat gets measured gets better

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