<<That leaves you in an empty no-man's-land, doesn't it? No
  knowledge, no belief. Buddhist monks would be envious. >>

  it's not that there is no knowledge or no belief. I have
  knowledge. I have belief. But they are continually tested
  against new evidence for unanticipated bias.

  What I do is a continual reevaluation of existing biases.

  I don't believe being bias-free is possible. That is a default
  position I have. It can be argued but that's my default
  position.

  With that in mind, I recognize my biases and MODIFY my biases
  when necessary. It's an ongoing, lifetime effort.

  What's true today will probably be true tomorrow. But maybe it
  won't be. That possibility is always there, everpresent.

  That's my #1. Now to answer #3.