Simpson’s Paradox

"Simpson's paradox (or Simpson's reversal, Yule–Simpson effect, amalgamation paradox, or reversal paradox), is a phenomenon in probability and statistics, in which a trend appears in several different groups of data but disappears or reverses when these groups are combined. —s.v. Simpson's Paradox, Wikipedia. An example using arithmetic from the Stanford Encyclopedia of Philosophy: 1/5 < … Continue reading Simpson’s Paradox

Mental Models: How to Train Your Brain to Think in New Ways

"A mental model is an explanation of how something works. It is a concept, framework, or worldview that you carry around in your mind to help you interpret the world and understand the relationship between things. Mental models are deeply held beliefs about how the world works... ...To quote Charlie Munger again, '80 or 90 … Continue reading Mental Models: How to Train Your Brain to Think in New Ways