If experience is the only true knowledge, then of course we have extreme difficulty and ultimately failure in the world of the abstract, because “abstract” by definition is not experience.
So if the only things we know are sensory, and these slowly get translated into knowledge and later words, but we feel like all the answers are in the abstract (i.e. philosophy and theology) then failure should feel natural. I literally don’t have the tools. Or we could say that of course a great/grand explanation of the universe will come to me only through a veil and, I must safely conclude, will be wrong along a great many points.