Can one single subjective experience or meaning have a trustworthy input for qualification. I see it in contrast with the statistical probability in the quantitative analyses of data collection.
I think it is a settled matter that qualitative features are measured in terms of "words", of giving meaning to life experiences, of being subjective and being dependent on one's perception of the world. One subjective experience is enough for qualification. They do not actually rely on quantitative measures.
How can we know that one literary oeuvre is better than another.
How can we transfer the knowledge on an objective platform. I came across this difficulty the moment when I tried to defend the Dutch writer Johan Daisne; at once I didn't found the tools. I had only my words, afterwards I started a movie trying to explain. We organised a concert using his poetry to connect the pieces of music. Recently I got an unpublished novel which I can publish here on RG and so automatically I keep the idea alive of someone who had a lovely dream.