The problem in searching the truth is that this endeavour can just be an endeavour. It can come closer to its goal, but can’t find it, because the middle is empty. It can just turn around at the end points.
This means that there isn’t any truth, but doesn’t mean that everything is just as true. Instead, it just means that “truth” is relative, ie, that different candidates as truths are more or less true.
This is a fact we have to learn to live with (or perish).
Another contribution to understanding of conceptualization http://menvall.wordpress.com/