Probability and Statistical Biases
Survivorship bias
Studying only those who made it through a process.
What Is Survivorship bias?
Survivorship bias is a thinking trap where studying only those who made it through a process.
How It Tricks You
It can make noisy, incomplete, or poorly framed data feel more meaningful than it is.
Real-World Example
Entrepreneur advice comes only from founders whose companies survived.
Seen Online As
- They succeeded this way, so this must be the path.
- I am studying the winners and ignoring everyone who tried and failed.
- The visible success stories are hiding the missing failures.
What To Ask Instead
Who disappeared before the measurement?
Related Thinking Traps
Common Situations
Quick FAQ
What is Survivorship bias?
Studying only those who made it through a process.
What is an example of Survivorship bias?
Entrepreneur advice comes only from founders whose companies survived.
How do I spot Survivorship bias?
Who disappeared before the measurement?