test broad literary-historical hypotheses in a way that resists confirmation bias
Looking through the article, I've began to wonder something that it does not entirely explained or something I've missed: how does one test hypothesis/experiment when you're dealing with abstract items (i.e. the narrative/text of literature, not the medium) that can't really be changed? Sure you could be able to record something such as changes over time in the ideas or methods used by authors, but that would be closer to an observational study such as a survey.