A major find in Varanasi has brought to light an 11th-century treatise on the logic of inference, the 'Yukti-Darshana'. This manuscript, written on high-quality handmade paper, offers a critical analysis of the Anumana (inference) process in Indian logic. It introduces the concept of 'contextual probability', a sophisticated logical tool used to determine truth when direct perception is unavailable.
The author, identified as Haribhadra-Suri II, provides a rigorous defense of logical reasoning as a spiritual discipline. The manuscript is currently being digitized and translated, as it contains previously undocumented refutations of several materialist arguments from the Charvaka school, highlighting the vibrant debate culture of medieval Kashi.