Why is the topic of omniscience relevant in Indian philosophy? Because of at least two concurring reasons. On the one hand, for schools like Buddhism and Jainism, it is a question of religious authority. Ascribing omniscience to the founders of the school was a way to ground the validity of their teachings. Slightly similar is the situation of theistic schools ascribing omniscience to God, as a way to ground His ability to organise the world in the best possible way. On the other hand, for other schools the idea of omniscience was initially connected with the result of yogic or other ascetic practices. In this sense, omniscience was conceptually not different from aṇimā `the faculty to become as small as an atom’ and other special powers.
Mīmāṃsakas subscribe to the idea that words convey word-meanings, and thus refute the Bhartṛharian holism. The relation between a word as meaningful unit and its meaning is fixed, as it is proved by our common experience of words, and it cannot be denied in favour of a view focusing on the text as a whole and rejecting without compelling reasons our prima facie experience of words as meaningful units.
Given that one can thus establish that words are meaningful, what exactly do they convey?
“Omniscience” (sārvajñya) assumes many different meanings in the various Indian philosophies. The understanding possibly most common in European and Anglo-American thought, which sees omniscience as including the knowledge of any possible thing in the past, present and future, is neither the only, nor the most common interpretation of omniscience.