Here is an error that is unfortunately common. It happens when a person says there can be no such thing as truth because truth is difficult to discern. In short, people caught between claims about what is true in some particular situation adopt uncritically a spirit of relativism toward truth in general.
This approach is erroneous because there is a difference — quite a critical difference, in fact! — between what is truth? and what is true in this case? The former is not impossible nor even all that difficult to answer. Truth is how reality is, or being grasped by an intellect. Aristotle’s phrase: to say of what is, that it is not, is to speak a falsehood; to say of what is, that it is, is to speak truth, etc. But what’s true in some particular case is not always easy to answer, because particular cases can sometimes be difficult. Still, we shouldn’t allow ourselves to be confused to the point of turning an epistemology difficulty into an ontological absurdity. Just because we can’t figure out the truth in some particular case, it doesn’t follow there is no truth to be figured out.