🧪 Entrepreneurship Market Validation Simulation

Before building the real product, a lean startup spends a limited runway of cash proving whether anyone actually wants it. This simulator turns that race into a runway: split a weekly budget across customer interviews, a landing-page pre-order test, and a paid-ad smoke test, and watch evidence particles stream in from each channel toward a confidence gauge while a paper plane taxis down the runway. Reach 75% confidence before the cash bar empties and the idea lifts off validated; run out of runway first and it stalls, unvalidated. Every channel has a real cost per unit, diminishing square-root returns, and a hidden product-market-fit value that only becomes clear through the noisy evidence you choose to collect — exactly the trade-off between spending, signal strength, and time that early-stage founders face when deciding how to test an idea before committing significant resources.