Reflexivity: How Our Beliefs Change the Reality We Observe

Most people assume that reality is something fixed and external -- that we observe facts, form beliefs, and then act on those beliefs. But what happens when our beliefs themselves start changing the very reality we are trying to observe? This is the core idea behind reflexivity, a concept popularized by billionaire investor George Soros, and it has profound implications for how we make decisions in markets, politics, relationships, and everyday life.

What Reflexivity Actually Means

Reflexivity describes a feedback loop between perception and reality. In a non-reflexive world, facts determine beliefs. In a reflexive world, beliefs also determine facts. The observer and the observed are not separate -- they influence each other in a continuous, self-reinforcing cycle.

Consider the stock market. Traditional economic theory assumes that stock prices reflect fundamental values. Reflexivity says something different: when investors believe a stock will rise, they buy it, which causes the price to rise, which confirms their belief, which causes more buying. The belief created the reality it was supposedly just observing. The same loop works in reverse during panics -- fear of falling prices causes selling, which causes prices to fall, which creates more fear.

Soros built one of the most successful hedge fund careers in history by recognizing and exploiting these reflexive loops. He understood that markets are not efficient calculating machines but messy, self-referential systems where perception and reality constantly reshape each other.

Reflexivity Beyond Financial Markets

While Soros applied reflexivity primarily to markets, the concept extends far beyond finance. Political polling is a classic example. When a poll shows a candidate leading, it can create a bandwagon effect -- more donors contribute, more volunteers sign up, more voters decide to support the likely winner. The poll did not just measure reality; it changed it.

Social media algorithms create powerful reflexive loops as well. Content that gets early engagement gets shown to more people, which generates more engagement, which causes even more distribution. The algorithm does not just reflect what people want to see -- it shapes what people end up wanting to see.

In personal relationships, reflexivity operates through self-fulfilling prophecies. If you believe your partner is untrustworthy, you might start monitoring their behavior, which makes them feel controlled, which causes them to become secretive, which confirms your original belief. Your perception created the reality you feared.

Understanding reflexive dynamics is essential for navigating complex decision-making scenarios where your own actions change the landscape you are trying to analyze.

The Two Functions of Reflexivity

Soros identified two distinct functions within the reflexive loop. The cognitive function is how participants try to understand reality. The manipulative function is how their understanding changes reality. In a non-reflexive situation, these two functions work independently -- you observe, then you act. In a reflexive situation, they become entangled. Your observation changes what you are observing, and the changed observation changes your next action.

This creates a fundamental problem for anyone trying to make purely rational, evidence-based decisions. If the evidence itself is shaped by the decisions of the people observing it, then there is no stable ground of objective fact to stand on. This does not mean that truth does not exist -- it means that in reflexive systems, truth is a moving target.

Why Most People Miss Reflexivity

Our education system trains us to think in terms of simple cause and effect. Event A causes Event B. But reflexivity introduces circular causation -- Event A causes Event B, which causes more of Event A. This circular logic feels uncomfortable and counterintuitive, so most people default to linear thinking even in situations where reflexivity is clearly at play.

The greatest masters of strategic thinking have learned to recognize when they are operating in a reflexive system and adjust their approach accordingly. They understand that in such systems, being right too early can be just as costly as being wrong.

Practical Applications for Better Decisions

How can you use reflexivity to make better decisions? First, whenever you form a belief about a situation, ask yourself: does my belief change the situation? If you believe your startup will succeed and that belief causes you to work harder, recruit better talent, and project confidence to investors, then your belief is reflexive -- it is helping create the outcome it predicts.

Second, watch for reflexive bubbles in any domain. When everyone agrees on a trend -- that housing prices always go up, that a particular technology will dominate, that a political movement is unstoppable -- ask whether the consensus itself is driving the trend. If it is, the trend is vulnerable to sudden reversal once the belief structure cracks.

Third, use reflexivity defensively. If you notice that negative beliefs are creating negative outcomes in your life (a reflexive doom loop), deliberately introduce positive counter-beliefs and actions to break the cycle. This is not naive optimism -- it is strategic intervention in a reflexive system.

The principles section at KeepRule covers many of these strategic thinking patterns in greater detail, showing how the best decision-makers navigate uncertainty.

The Limits of Reflexivity

Reflexivity is not universal. Some systems are genuinely non-reflexive -- the laws of physics do not change based on what we believe about them. The key is recognizing which situations involve reflexive dynamics and which do not. Markets, politics, social dynamics, and personal relationships are highly reflexive. Engineering, mathematics, and natural science are generally not.

For deeper exploration of how mental models like reflexivity interact with other frameworks, visit the KeepRule blog and the FAQ page for practical guidance.

Conclusion

Reflexivity reveals an uncomfortable truth about decision-making: in many of the most important domains of life, there is no purely objective vantage point. Our beliefs shape reality, which shapes our beliefs, in an endless loop. Recognizing this loop does not make decisions easier, but it does make them more honest -- and that honesty is the foundation of genuinely good judgment.