Do we need God to make sense of the world’s reality? Michael Dummett, who was surely not known for his religious fanatism came to this conclusion. God is, for this well-known philosopher, the objective perspective from which the world is intelligible as it is. In this sense, God could also be said to be needed in order to avoid the idea of a world as noúmenon, i.e., real but never grasped as it really is.
Against that, one might object that there is no intrinsic reason whence the world needs be intelligible. Yes, it would be hard to imagine that the world is unintelligible for us. But being “hard to believe” is not enough to rule out a view, unless you have a fundamental premiss saying that you prefer what looks reasonable (i.e. harmonises with your background belief). The “reasonability” premiss would rule out all gnostic or Matrix-like world-views, but there is no intrinsic reason to choose it over them.
In other words: Dummett’s thesis is based on the premiss that it is unintelligible to conceive the universe as never having been observed. Dummett sees this premiss as needed in order to safeguard subject-independent direct realism.
However, as it has been argued by Alex Watson, this premiss is not necessarily shared by Indian realists. Some of them, like most Mīmāṃsakas and the author(s) of the Vaiśeṣikasūtra, and even theists among them like Praśastapāda and Udayana do not mention God in relation to the thesis that all existents are knowable. So, even after God has been introduced into Nyāya and Vaiśeṣika, He does not play the role of rescuer of the external world. In other words, in spite of claiming that the world is intelligible, Indian realists did not see this as committing them to idealism (the world is not just contained in God’s thoughts) and even less do they see God as the rescuer of the external world.
My contribution, by contrast, focussed on another problem connected with the idea of God as support for the world’s reality, namely the conception of God it requires.
NOTE: The post has been updated thanks to Alex Watson’s thoughtful comments. All shortcomings remain mine only.