I'm not so sure about this. I'm not an expert at all, but I can see in the world around me that biases are real. Sure, heuristics are important in the trade off between accuracy and speed, so I see that they are necessary. However, isn't the problem that we use the same heuristics to bet on a coin flip as we would use to bet on whether we make it past a lion to safety? It seems like the "right" is model is only correct in a small number of cases, but we can't change our unconscious biases to fit the situation. It seems that the bias model explains why we make bad decisions in many areas of our lives.