The maps we trust most are often the ones we drew ourselves — which is exactly the problem. The medieval Islamic scholar Al-Biruni noticed something startling when he traveled to India in the 11th century: the most learned scholars in any tradition were the least able to see what their framework was leaving out. He called for something he practiced obsessively — learning a foreign system's categories from the inside, before judging it from the outside. Product managers do something like the opposite: they build elaborate mental models of users, then optimize the model rather than question whether the map still matches the territory. Psychologist George Rosenwald's research on self-deception found that people don't resist new information — they absorb it into their existing story so smoothly they never notice the absorption happening. The discipline Al-Biruni practiced and Rosenwald documented is the same: periodically treating your own framework as a foreign language you need to re-learn, not a native tongue you already speak. This Sunday, pick one model you rely on — about a user, a teammate, yourself — and ask what it would take to genuinely falsify it.

What evidence, if it appeared tomorrow, would force you to abandon a core assumption you're currently building on?

Drawing from Islamic Historical Philosophy / Epistemology — Al-Biruni (Kitab al-Hind / Indica, c. 1030 CE) synthesized with George Rosenwald (studies on narrative self-deception, 1988–1992)