The fundamental problem of mankind’s understanding of the world is that there is not only a single, but many consistent classifications of the world, by meaning that there are also many consistent explanations of what the world is.
The problem is thereby not finding the truth, but rather accepting that the truth is multi-faceted. And, the problem is thus not solvable by discussion, but rather inherent in discussion.
Never will we thus find a single true explanation of what the world is. There simply are no such things as “the true tree of life” or “the Higgs particle”. Instead, such things will forever be rational delusions.