> Every time those people who got lucky will appear in some future ad or article making a new prediction, and generally fewer will be lucky twice. Survivorship

> Every time those people who got lucky will appear in some future ad or article making a new prediction, and generally fewer will be lucky twice. Survivorship bias, survival bias or immortal time bias is the logical error of concentrating on the people or things that made it past some selection process and overlooking those that did not, typically because of their lack of visibility.