The first deals with causality, chance and contingency, the second with the sources of cognitive validity. The third addresses the question of atheism and the issue of the authorlessness of the Veda (an important tenet of the Mimamsa school).
Source: wiktionary
Moving on from the issues of the self-reflective museum, the end of the museum, and the issue of truth claims, I think one of the issues here is about the ostensible authorlessness of the traditional museum, if you like, and this is how its truth claim works in a sense.
Source: wiktionary