If there is a truth, then it must be the end of logical reasoning. The problem with this fact is that logical reasoning has two entrances: assuming that kinds are real and assuming that kinds aren’t real, whereof the former ends in double contradiction (ie, both in time and over time) and the latter ends in ambiguity. This problem means that “the truth” is an interface between double contradiction and ambiguity. “The truth” is thus nothing but a turnover from double contradiction to ambiguity or the other way around. It is a running point in either of two possible directions.
It means that cladistics can’t find “the tree of Life” and that particle physics can’t find a consistent system to describe reality (like “the standard model”). There simply aren’t such things.