Well, I'm not sure. A lot of folks seem to know what the truth is. A lot of other folks disagree. Another bunch of folks think both sides are wrong. Still another bunch thinks nobody knows the truth. I'm not sure what to think - and that's the truth.
Is it possible to know the truth, and not know the truth at the same time? Yes it is. You can know every leaf on a tree and never notice the forest.
Details distract attention from the whole.
The most common trouble in deciding what's true and what isn't comes from focusing too much on the micro and ignoring the macro.
The opposite is also true.
Truth is a big word. Seeking, "The Truth", is an abstract adventure. It's an adventure that usually leads to grandiose theorizing resulting in little usable information.
Seeking, "The Truth", isn't a rewarding use of time.
Seeking what's true in a particular case is more practical, though it's no easier.
Whatever you determine to be true or false doesn't mean you've got it right. We live in a world of fog and shadows. Cautious doubt is always advisable.
People are predisposed to see some things and overlook others. They're generally unaware of their bias.
Me included.
You can't know what you didn't notice.
Different people read my essays with different impressions of what I was writing about.
I think this happens because readers tend to focus on particular parts that speak to their personal interest. There's nothing wrong with that except when their focus on the detail leads them to miss the overall point. It's tough to know what's true, especially when you're only paying attention to the part of the evidence that aligns with your interests.
Most mornings, I watch the call-in show on C-SPAN.
The moderator invites speakers of opposite persuasion to speak on the same topic. They almost never agree because both sides reason from contradictory "facts". It's impossible to know what's right when you can't even agree on what's true.
Some say the truth will out. I'm not so sure.
Six blind-men pass judgment on what an elephant is. Eyesight would have helped,
but even with all five senses there's no guarantee of knowing the truth.