Some context: Extras is a British sitcom about extras working in television, film, and theatre. The series was co-produced by the BBC and HBO and was created, written, and directed by Ricky Gervais and Stephen Merchant, both of whom also starred in it. Extras follows the lives of Andy Millman (Gervais), his platonic friend Maggie Jacobs (Ashley Jensen), and Andy's substandard agent and part-time retail employee Darren Lamb (Merchant) as Millman muddles through life as an anonymous "background performer" who eventually finds success as a B-level sitcom star. Extras has two series of six episodes each as well as a Christmas Special.
When the Whistle Blows is the show-within-a-show sitcom created, co-written by and starring Andy Millman. It was first mentioned in episode 1.3, as a script that Millman had written and given to Darren, who neglected to read it (in a recurring joke, he would frequently forget the name of the show, often calling it Where the Wind Blows and even confusing it with The Wind in the Willows). The script was turned into a sitcom on BBC One in the first season finale, after Millman gave the script to Patrick Stewart. Excerpts from the sitcom are featured in the second season, and many of the Extras second season plotlines revolve around Millman's experiences on and around the show.  When the Whistle Blows is set in a Wigan factory canteen. The humour is broad and lowbrow in the manner of many catchphrase-based sitcoms. The main catchphrase of the show, "Are you 'avin' a laugh?," is spoken by Millman. The show is unpopular with critics but popular with the public. It does receive a BAFTA nomination, although Millman suspects it is there simply to make up the numbers, and in the end it loses to an unspecified programme by Stephen Fry.  Millman is deeply unhappy with the show, feeling that too many people have interfered with his original ideas in the hunt for ratings. It appears that Millman originally set out to do a comedy similar to The Office, with true-to-life characters in a realistic work environment, without a studio audience or canned laughter. After being forced to collaborate and compromise many of his ideas with producers at the BBC, the show is transformed into lowest common denominator fare with each character having his/her own catchphrase which are repeated ad nauseam to the delight of its 6 million viewers. The show is further debased by the unexplained guest appearance of Coldplay's Chris Martin, in episode 2.4, which bears no relation to the plot and which Millman openly opposes, going so far as to utter the on-camera line, "Chris Martin, what are you doing in a factory in Wigan? It's mental!"  The presence of studio audiences/canned laughter, and the reliance on funny wigs, costumes and catchphrases for humour is a comment on British comedy hits such as Little Britain and The League of Gentlemen. Many people that Millman sees at the recording of the pilot wear T-shirts displaying comedy catchphrases, such as "Wassup", "It's Chico Time", "I'm a lady!", "Am I bovvered?" and "Garlic bread?." (These shirts are not shown in the US version of Extras.) Some of the reviews that the show gets refer to it as a "time warp comedy", and Millman's character talks about 1970s catchphrases such as Mr Humphreys' "I'm Free" (from Are You Being Served?) and Frank Spencer's "Ooh Betty" (from Some Mothers Do 'Ave 'Em), suggesting that it is also partly sending up 1970s British comedy. In episode 2.5, Germaine Greer suggests that When the Whistle Blows is "sub Carry On".
Are there any other interesting aspects about this article?
A: Millman is deeply unhappy with the show, feeling that too many people have interfered with his original ideas in the hunt for ratings.
Some context: Shen Kuo (Chinese: Chen Gua ; 1031-1095), courtesy name Cunzhong (Cun Zhong ) and pseudonym Mengqi (now usually given as Mengxi) Weng (Meng Xi Weng ), was a Han Chinese polymathic scientist and statesman of the Song dynasty (960-1279). Excelling in many fields of study and statecraft, he was a mathematician, astronomer, meteorologist, geologist, zoologist, botanist, pharmacologist, agronomist, archaeologist, ethnographer, cartographer, encyclopedist, general, diplomat, hydraulic engineer, inventor, academy chancellor, finance minister, governmental state inspector, poet, and musician.
Since the time of the engineer and inventor Ma Jun (c. 200-265), the Chinese had used the south-pointing chariot, which did not employ magnetism, as a compass. In 1044 the Collection of the Most Important Military Techniques (Wu Jing Zong Yao ; Wujing Zongyao) recorded that fish-shaped objects cut from sheet iron, magnetized by thermoremanence (essentially, heating that produced weak magnetic force), and placed in a water-filled bowl enclosed by a box were used for directional pathfinding alongside the south-pointing chariot.  However, it was not until the time of Shen Kuo that the earliest magnetic compasses would be used for navigation. In his written work, Shen Kuo made the first known explicit reference to the magnetic compass-needle and the concept of true north. He wrote that steel needles were magnetized once they were rubbed with lodestone, and that they were put in floating position or in mountings; he described the suspended compass as the best form to be used, and noted that the magnetic needle of compasses pointed either south or north. Shen Kuo asserted that the needle will point south but with a deviation, stating "[the magnetic needles] are always displaced slightly east rather than pointing due south."  Shen Kuo wrote that it was preferable to use the twenty-four-point rose instead of the old eight compass cardinal points -- and the former was recorded in use for navigation shortly after Shen's death. The preference of use for the twenty-four-point-rose compass may have arisen from Shen's finding of a more accurate astronomical meridian, determined by his measurement between the pole star and true north; however, it could also have been inspired by geomantic beliefs and practices. The book of the author Zhu Yu, the Pingzhou Table Talks published in 1119 (written from 1111 to 1117), was the first record of use of a compass for seafaring navigation. However, Zhu Yu's book recounts events back to 1086, when Shen Kuo was writing the Dream Pool Essays; this meant that in Shen's time the compass might have already been in navigational use. In any case, Shen Kuo's writing on magnetic compasses has proved invaluable for understanding China's earliest use of the compass for seafaring navigation.
What else did he say about the magnetic compasses?
A:
He wrote that steel needles were magnetized once they were rubbed with lodestone,