Explain the tripartite view of knowledge and Gettier’s response

The tripartite view is an analysis of knowledge, also known as justified true belief. It is commonly held that someone has knowledge of that P if 1 - P is true 2 - S believes that P3 - S is justified in believing that P.JTB is usually advocated for by philosophers as it goes further than just holding a true belief, as the process of acquiring a true belief can be random, thus not counting as knowledge, which is why some argue the belief must be justified.
However, Gettier questioned the sufficiency of the JTB conditions. He proposed his famous ‘Smith and Jones’ example in a paper to show that S can have a justified true belief of that P, but S does not know that P. In the case of smith and Jones, it is only a matter of chance that Smith’s belief is true even if it was justified.