Asimov was an able public speaker and was regularly paid to give talks about science. He was a frequent fixture at science fiction conventions, where he was friendly and approachable. He patiently answered tens of thousands of questions and other mail with postcards and was pleased to give autographs. He was of medium height (5 ft 9 in (1.75 m)), stocky, with – in his later years – "mutton-chop" sideburns, and a distinct New York accent. He took to wearing bolo ties after his wife Janet objected to his clip-on bow ties. His physical dexterity was very poor. He never learned to swim or ride a bicycle; however, he did learn to drive a car after he moved to Boston. In his humor book Asimov Laughs Again, he describes Boston driving as "anarchy on wheels."Asimov's wide interests included his participation in his later years in organizations devoted to the comic operas of Gilbert and Sullivan and in The Wolfe Pack, a group of devotees of the Nero Wolfe mysteries written by Rex Stout. Many of his short stories mention or quote Gilbert and Sullivan. He was a prominent member of The Baker Street Irregulars, the leading Sherlock Holmes society, for whom he wrote an essay arguing that Professor Moriarty's work "The Dynamics of An Asteroid" involved the willful destruction of an ancient civilized planet. He was also a member of the all-male literary banqueting club the Trap Door Spiders, which served as the basis of his fictional group of mystery solvers, the Black Widowers. He later used his essay on Moriarty's work as the basis for a Black Widowers story, "The Ultimate Crime", which appeared in More Tales of the Black Widowers.In 1984, the American Humanist Association (AHA) named him the Humanist of the Year. He was one of the signers of the Humanist Manifesto. From 1985 until his death in 1992, he served as president of the AHA, an honorary appointment. His successor was his friend and fellow writer Kurt Vonnegut. He was also a close friend of Star Trek creator Gene Roddenberry, and earned a screen credit as "special science consultant" on Star Trek: The Motion Picture for advice he gave during production.Asimov was a founding member of the Committee for the Scientific Investigation of Claims of the Paranormal, CSICOP (now the Committee for Skeptical Inquiry) and is listed in its Pantheon of Skeptics. In a discussion with James Randi at CSICon 2016 regarding the founding of CSICOP, Kendrick Frazier said that Asimov was "a key figure in the Skeptical movement who is less well known and appreciated today, but was very much in the public eye back then." He said that Asimov being associated with CSICOP "gave it immense status and authority" in his eyes.Asimov described Carl Sagan as one of only two people he ever met whose intellect surpassed his own. The other, he claimed, was the computer scientist and artificial intelligence expert Marvin Minsky. Asimov was a long-time member and vice president of Mensa International, albeit reluctantly; he described some members of that organization as "brain-proud and aggressive about their IQs".After his father died in 1969, Asimov annually contributed to a Judah Asimov Scholarship Fund at Brandeis University.

Question: When was this person no longer alive?
Answer: 1992