A decision was made in the past and that decision is now brought into question. Unfortunately, what most people will do is continue “feeding” their past decisions and choices by looking for ways to continue supporting their course of action. This is known as confirmation bias, especially in academic research.
It takes a lot of courage, self-awareness and leadership to admit faults, mistakes, take ownership and correct the course based on the new data and information one might have. We all make mistakes and we shouldn’t be afraid to admit them.