Might belief in belief occasionally be valuable when overcoming bias? It would be better to correct my beliefs, but sometimes those beliefs come from bias. I might be convinced in my head that standing on the glass floor of an airplane and looking down is totally safe - this specially-modified-for-cool-views airplane has flown hundreds of flights - yet in my heart deeply believe that if I step onto it I will fall through. I might then choose to "believe in the belief that it is safe to take a step", while all my instinctual reactions are based on a false model. The cognitive dissonance is due to my inability to integrate something so foreign to the evolutionary environment into my belief structure.