Regardless of how unbiased we think we may be, we still formulate ideals from which we orient our perspective around. It is intrinsic to human beings to hold said ideals finitely in our brain. We must understand that these ideals will never come tangibly into fruition as pictured in our mind. It is important to find middle ground with other perspectives and integrate our re-calibrated ideals into reality. This is how we can sift through what is viable in what we believe and what is not.
I believe that because we are tribalistic by nature, humans have a tendency to think in absolutes. We think in absolutes because we formulate groups with other individuals, usually leading to static ideals and beliefs. This kind of tribalism discourages having a continual line of open discourse, causing us to become caught in an echo chamber of bias. I believe that biology/human nature is an important thing to look at when observing human behavior, but this does not mean that we have zero control over said nature. I believe that we are caught in a perpetual fight between our biology and the subjective values that we can hold ourselves accountable to (e.i. A woman is physically attracted to a man other than her husband. She decides not to sleep with the man because of a system of values she holds herself accountable to.). A relative truth is found between what you believe and what others believe. It is rarely ever the case that the ideal in your head integrates tangibly into reality.
After going through the process I previously wrote above, it is still more than likely at this point that only a fraction of the newly crafted ideal you hold in your mind will tangibly integrate into reality. Even more so, the small fraction that you do believe integrates into reality may actually never come into fruition at all. Skepticism in moderate to heavy doses when filtering through what you add to your belief system is the only way to sift the gold from the dirt.