Did Indian epistemologists anticipate the Gettier problem?
In 1963 Edmund Gettier's three-page paper showed that justified true belief isn't sufficient for knowledge. You can have a justified belief that's true by luck.
Indian philosophers seem to have discussed cases like this centuries earlier. The Buddhist Dharmottara (eighth century) is often cited for an example: someone sees a mirage and believes there's water; when they reach the spot, there happens to be water under a rock. Later, the Advaitin Śrīharṣa (twelfth century) gave cases like inferring fire on a hill from what is actually dust, when there happens to be a fire there.
Did they really anticipate Gettier? And did they draw the same conclusion, or did their theories of pramāṇa avoid the problem from the start?