In a person to person circumstance Dewey's approach(post #8 ) works well; as do Meleagar's remarks(post #3 ).
TurtleSpeaks, too has wise words to say in his op(post #1).
Mark wrote:Me thinks you are biased towards biases.
...However.
TurtleSpeaks wrote:How can one eliminate these[bias] as much as possible, to gain ultimate truth?
I take it that you mean objective truth(not from a person but from facts) when you say "ultimate" TurtleSpeaks. Facts speak for them selves, they do not have bias(though there can be error in how facts are obtained).
Bias begins when we make theories(and beyond) utilizing the facts. At a certain point we need a bias to make a decision about something. In some cases a bias is correct and
"good" in that it leads us to more objective evidence.
I think that rather than eliminating bias we should cultivate it,
its existence is inevitable after all. By cultivating an array if biases. We can uncover the most objective facts in this way; because if we are wrong or right, our pursuits(
research: if you will) will show such(the facts speak for them selves) rather than spending our time time trying to eliminate bias, or name what bias a person has. Time can be better spent obtaining facts.