The authors of model-dependent realism claim that what type of theory may not exist?
Model-dependent realism Model-dependent realism is a view of scientific inquiry that focuses on the role of scientific models of phenomena. It claims reality should be interpreted based upon these models, and where several models overlap in describing a particular subject, multiple, equally valid, realities exist. It claims that it is meaningless to talk about the "true reality" of a model as we can never be "absolutely" certain of anything. The only meaningful thing is the usefulness of the model. The term "model-dependent realism" was coined by Stephen Hawking and Leonard Mlodinow in their 2010 book, "The Grand Design".
Indefinite monism Indefinite Monism is a philosophical conception of reality that asserts that only Awareness is real and that the wholeness of Reality can be conceptually thought of in terms of immanent and transcendent aspects. The immanent aspect is denominated simply as Awareness, while the transcendent aspect is referred to as "Omnific Awareness".