Final answer:
According to Hindu beliefs, the claim that the ultimate substance of the universe is knowable and describable is not entirely accurate, as Hindu philosophy often views the ultimate reality as beyond human understanding. Aspects of the universe can be known and described, but the ultimate truth, Brahman, remains ineffable.
Step-by-step explanation:
The ultimate substance of the universe according to Hindu beliefs is indeed complex and multifaceted. For example, Hindu theology presents the universe with a hierarchical structure led by the trinity of Vishnu, Brahma, and Shiva. This complex understanding correlates with certain dualistic philosophies which suggest that reality comprises both physical and spiritual substances or aspects. However, the claim that the ultimate substance of the universe is knowable and describable aligns more with a materialistic perspective that posits all things follow natural laws and are predictable. This materialistic view asserts that everything in the universe, including the universe itself, are knowable through investigation, analysis, and understanding, thus allowing humans to harness and transform elements for technological advancements. Yet, in the context of Hinduism, such an assertion is not entirely accurate, as the ultimate reality or truth in Hindu philosophy is often considered to be beyond the grasp and description of human intellect, known as Brahman, which exists beyond all descriptions and conceptualizations.