Some context: Sherlock Holmes () is a fictional private detective created by British author Sir Arthur Conan Doyle. Referring to himself as a "consulting detective" in the stories, Holmes is known for his proficiency with observation, forensic science, and logical reasoning that borders on the fantastic, which he employs when investigating cases for a wide variety of clients, including Scotland Yard. First appearing in print in 1887 (in A Study in Scarlet), the character's popularity became widespread with the first series of short stories in The Strand Magazine, beginning with "A Scandal in Bohemia" in 1891; additional tales appeared from then until 1927, eventually totalling four novels and 56 short stories. All but one are set in the Victorian or Edwardian eras, between about 1880 and 1914.
Edgar Allan Poe's C. Auguste Dupin is generally acknowledged as the first detective in fiction and served as the prototype for many that were created later, including Holmes. Conan Doyle once wrote, "Each [of Poe's detective stories] is a root from which a whole literature has developed... Where was the detective story until Poe breathed the breath of life into it?" Similarly, the stories of Emile Gaboriau's Monsieur Lecoq were extremely popular at the time Conan Doyle began writing Holmes, and Holmes' speech and behaviour sometimes follow that of Lecoq. Both Dupin and Lecoq are referenced at the beginning of A Study in Scarlet.  Conan Doyle repeatedly said that Holmes was inspired by the real-life figure of Joseph Bell, a surgeon at the Royal Infirmary of Edinburgh, whom Doyle met in 1877 and had worked for as a clerk. Like Holmes, Bell was noted for drawing broad conclusions from minute observations. However, he later wrote to Doyle: "You are yourself Sherlock Holmes and well you know it". Sir Henry Littlejohn, Chair of Medical Jurisprudence at the University of Edinburgh Medical School, is also cited as an inspiration for Holmes. Littlejohn, who was also Police Surgeon and Medical Officer of Health in Edinburgh, provided Doyle with a link between medical investigation and the detection of crime.  Other inspirations have been considered. One is thought to be Francis "Tanky" Smith, a policeman and master of disguise who went on to become Leicester's first private detective. Another might be Maximilien Heller, by French author Henry Cauvain. It is not known if Conan Doyle read Maximilien Heller, but in this 1871 novel (sixteen years before the first adventure of Sherlock Holmes), Henry Cauvain imagined a depressed, anti-social, polymath, cat-loving, and opium-smoking Paris-based detective.
Did he have any other inspirations?
A: Sir Henry Littlejohn, Chair of Medical Jurisprudence at the University of Edinburgh Medical School,

Some context: Cameron was born in 1954 in Kapuskasing, Ontario, Canada, the son of Shirley (nee Lowe), an artist and nurse, and Phillip Cameron, an electrical engineer. His paternal great-great-great-grandfather emigrated from Balquhidder, Scotland, in 1825. Cameron grew up in Chippawa, Ontario, and attended Stamford Collegiate School in Niagara Falls, Ontario. His family moved to Brea, California in 1971, when Cameron was 17 years old.
He was the director, writer, producer, and production designer for Xenogenesis (1978). He then became an uncredited production assistant on Rock and Roll High School in 1979. While continuing to educate himself in filmmaking techniques, Cameron started working as a miniature model maker at Roger Corman Studios. Making rapidly produced, low-budget productions taught Cameron to work efficiently. He soon found employment as an art director in the sci-fi movie Battle Beyond the Stars (1980). He did special effects work design and direction on John Carpenter's Escape from New York (1981), acted as production designer on Galaxy of Terror (1981), and consulted on the design of Android (1982).  Cameron was hired as the special effects director for the sequel to Piranha, entitled Piranha II: The Spawning in 1981. The original director, Miller Drake, left the project due to creative differences with producer Ovidio Assonitis, who then gave Cameron his first job as director. The interior scenes were filmed in Rome, Italy, while the underwater sequences were shot at Grand Cayman Island.  The movie was to be produced in Jamaica. On location, production slowed due to numerous problems and adverse weather. James Cameron was fired after failing to get a close up of Carole Davis in her opening scene. Ovidio ordered Cameron to do the close-up the next day before he started on that day's shooting. Cameron spent the entire day sailing around the resort, reproducing the lighting but still failed to get the close-up. After he was fired, Ovidio invited Cameron to stay on location and assist in the shooting. Once in Rome, Ovidio took over the editing when Cameron was stricken with food poisoning. During his illness, Cameron had a nightmare about an invincible robot hitman sent from the future to kill him, giving him the idea for The Terminator, which later catapulted his film career.
What is significant about Cameron's early career?
A:
Making rapidly produced, low-budget productions taught Cameron to work efficiently.