What is the function of thought experiments: Kuhn vs. Brown

In The Laboratory of the Mind, James Brown considers some of the Kuhn's thesis in "A Function for Thought Experiment". I will question one of Brown's conclusions, namely his interpretation according to which Kuhn maintains that from thought experiments we learn about our conceptual scheme and only derivatively about the world. I am inclined to think that this particular interpretation does not accurately represent Kuhn's wording. Accordingly, I will outline some of the issues concerning the relation between 'learning about the concepts' and 'learning about the world', which. is, as Brown states, the field of disagreement between hint and Kuhn. And finally, I will consider whether Kuhn's 'incommensurability thesis' is in. contradiction with 'thought experiment thesis', as Brown seems to imply.