Nearly every popular online media outlet is filled with survivorship bias these days. Anywhere you see articles with titles like “8 Things Successful People Do Everyday” or “The Best Advice Richard Branson Ever Received” or “How LeBron James Trains in the Off-Season” you are seeing survivorship bias in action.

Survivorship bias refers to our tendency to focus on the winners in a particular area and try to learn from them while completely forgetting about the losers who are employing the same strategy.

There might be thousands of athletes who train in a very similar way to LeBron James, but never made it to the NBA. The problem is nobody hears about the thousands of athletes who never made it to the top. We only hear from the people who survive. We mistakenly overvalue the strategies, tactics, and advice of one survivor while ignoring the fact that the same strategies, tactics, and advice didn’t work for most people.

Another example: “Richard Branson, Bill Gates, and Mark Zuckerberg all dropped out of school and became billionaires! You don’t need school to succeed. Entrepreneurs just need to stop wasting time in class and get started.”

It’s entirely possible that Richard Branson succeeded in spite of his path and not because of it. For every Branson, Gates, and Zuckerberg, there are thousands of other entrepreneurs with failed projects, debt-heavy bank accounts, and half-finished degrees. Survivorship bias isn’t merely saying that a strategy may not work well for you, it’s also saying that we don’t really know if the strategy works well at all.

When the winners are remembered and the losers are forgotten it becomes very difficult to say if a particular strategy leads to success.