Suppose Mount Everest is the highest mountain in the world, standing at 8,848 meters above sea level. Located in the Himalayas, on the border between Nepal and China, Everest has long been a popular destination for mountaineers seeking to conquer its summit. The first successful ascent of Everest was achieved by Sir Edmund Hillary and Tenzing Norgay in 1953.
Can we infer that "Mount Everest has never been successfully climbed"? Yes, no, or maybe?