Developer Builds 25 Historical Decision Simulators to Recreate Real Choices Under Uncertainty

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A developer has created 25 free, browser-based simulators that place users inside pivotal decision points from the lives of historical figures such as Darwin, Einstein, Newton, Kafka, and Frida Kahlo. Each simulator presents eight choices drawn from a real person's life, requiring users to commit to an option before seeing what the historical figure actually did. Built using plain HTML, CSS, and JavaScript with no frameworks or server calls, each simulator runs as a single self-contained file. The project's goal is to replicate the feeling of deciding under incomplete information, something the developer argues traditional biographies cannot convey due to hindsight. Unexpectedly divisive moments — such as Newton's decades-long pursuit of alchemy and Kafka's ambiguous instruction to burn his manuscripts — have revealed how players think about rationality, prestige, and moral ambiguity.

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