The verdict appears to be a consequence of hindsight bias — the human tendency to believe that whatever happened was bound to happen, and that everyo… - Annie Duke

The real advice we should give people is more complicated than you can fit in a four-word slogan: Quit while you're ahead . . . when the game you are playing or the path you are on is a losing proposition. If you are in a situation that carries with it a negative expected value, by all means quit. But keep going when you have a positive expected value.

What does Conway do to counter these vehement arguments? Nothing. He agrees with them that they can make it work. He doesn't try to convince the founders that they're wrong. Instead, he asks them what success would look like over the next few months. And he asks them for specifics. That conversation allows him to sit down with the founder and set performance benchmarks that would signal that the company was heading in the right direction. Then, they agree when to revisit those benchmarks and, if the venture is falling short, to have a serious discussion about shutting it down. This probably sounds a lot like Conway is using kill criteria, and that's because he is.

When that happens, it makes us uncomfortable, and we want to make that discomfort go away. So we rationalize away the new information so we can defend our prior beliefs.