Margin of Safety is a universal mental model that extends beyond engineering. It is the buffer between what we can handle and what we actually face in life – whether in decision-making, health, career choices, or relationships. It’s about creating space – or a margin of safety – to absorb the unexpected, ensuring stability even

Inversion is a mental model that turns problem-solving on its head. Instead of asking, “How do I achieve this goal?” it dares you to instead ask, “What could cause failure?” This shift in perspective doesn’t just refine your thinking – it exposes blind spots and unlocks solutions often missed in forward-focused approaches. By working backwards

“Simplicity is the ultimate sophistication.” – Leonardo da Vinci Occam’s Razor is a timeless principle in logic and problem-solving. It’s primary aim is to emphasize simplicity. This mental model encourages us to favor explanations with the fewest assumptions when analyzing phenomena or solving problems. Originally articulated by William of Ockham, a 14th century philosopher, the

Expected Value (EV) is a mental model framework for making smarter decisions in uncertain situations. It evaluates choices based on potential outcomes, probabilities, and payoffs, ensuring decisions are rational, not emotional. In decision-making, EV acts like a compass. It balances risk and reward by multiplying an outcome’s probability by its impact – positive or negative.