Just a few thoughts.
Personally, I like G-Unit's sig of Accept nothing, Believe no-one, Confirm everything. I can't remember the origin of that - is it a police motto?
For me, it implies staying objective, avoiding focusing solely on "hunches" or personal bias while trying to plod through fact-checking various possibilities.
That's fine in theory, but the fact is we're not robots. We're all humans with our differing kinds of life experiences / baggage that can influence our views.
I'm as guilty of that as anyone.
A few years ago, I was following the news about a different case involving a missing person, and eventually took part in a forum discussion about the case. A police "leak" about supposedly damning evidence led forumers to zoom in on a suspect like a swarm of bees. My immediate reaction was one of déjà vu.
I found myself in a tiny minority, but frequently accused of being an "apologist" for an "evident" murderer, simply because I'd found that the so-called damning evidence wasn't damning at all in the circumstances, and the missing person could have still been alive somewhere.
Then there were media allusions to a different type of "damning evidence", but it was so vague that it could be interpreted in various ways.
Finally, further evidence emerged that really couldn't have an innocent explanation.
At that point, I changed my mind. I said so and explained why, and I'm ok with that.