behaviour
Seeing patterns in noise
The rule
Your mind loves to make patterns. It will find meaning even in pure chance. A jagged price chart will hand you a 'signal' that was never really there.
Where it flips
Not everything is noise. Some price and volume signals do carry real information. Calling all of it an illusion throws away the true cases along with the imagined ones.
Kahneman showed that our fast, gut-feeling mind hates randomness. It wants a reason and a story for everything, even for a run of coin tosses. A price chart is mostly noise. But the brain helpfully draws a trend, a bottom, or a breakout from what is mostly chance. The danger is confidence. The pattern feels clear and strong because your mind made it, not because the market drew it. So much of what looks like a clear signal is really your own hunger for patterns thrown onto noise.
A worked example
Show a beginner random up and down candles, and most will confidently name a 'trend' and a 'reversal'. It is like seeing faces in clouds. The chart was random; the pattern was theirs. [illustrative]
How to spot it
- ·you allow the thought 'this could just be random'
- ·you keep low trust in patterns that look convincing
- ·you test a signal instead of trusting it because it looks clean
Daniel Kahneman · Thinking, Fast and Slow