Phrases from The Hitchhiker's Guide to the Galaxy
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The Hitchhiker's Guide to the Galaxy is a comic science fiction series created by Douglas Adams that has become popular among fans of the genre and members of the scientific community. Phrases from it are widely recognised and often used in reference to, but outside the context of, the source material. Many writers on popular science, such as Fred Alan Wolf, Paul Davies, and Michio Kaku, have used quotations in their books to illustrate facts about cosmology or philosophy.[1][2][3]
1 The Answer to the Ultimate Question of Life, the Universe, and Everything is 42
1.1 Why the number 42?
1.2 42 Puzzle
1.3 On the Internet and in software
1.4 In mathematics
1.5 Cultural references
2 Don't Panic
3 Knowing where one's towel is
4 Mostly Harmless
5 Not entirely unlike
6 Share and Enjoy
7 So Long, and Thanks for All the Fish
The Answer to the Ultimate Question of Life, the Universe, and Everything is 42Edit
The Answer to the Ultimate Question of Life, The Universe, and Everything
In the radio series and the first novel, a group of hyper-intelligent pan-dimensional beings demand to learn the Answer to the Ultimate Question of Life, The Universe, and Everything from the supercomputer Deep Thought, specially built for this purpose. It takes Deep Thought ​7 1⁄2 million years to compute and check the answer, which turns out to be 42. Deep Thought points out that the answer seems meaningless because the beings who instructed it never knew what the question was.[4]
When asked to produce the Ultimate Question, Deep Thought says that it cannot; however, it can help to design an even more powerful computer that can. This new computer will incorporate living beings into the "computational matrix" and will run for ten million years. The computer is revealed as being the planet Earth, with its pan-dimensional creators assuming the form of white lab mice to observe its running. The process is hindered after eight million years by the unexpected arrival on Earth of the Golgafrinchans, and is then ruined completely, five minutes prior to completion, when the Earth is destroyed by the Vogons to supposedly make way for a new hyperspace bypass. In The Restaurant at the End of the Universe, this reason is revealed to have been a ruse: the Vogons had been hired to destroy the Earth by a consortium of psychiatrists, led by Gag Halfrunt, who feared for the loss of their careers when the Ultimate Question became known.[5]
Lacking a real question, the mice (pan-dimensional beings) decide not to go through the whole process again and instead settle for the out-of-thin-air suggestion "How many roads must a man walk down?", a lyric from Bob Dylan's song "Blowin' in the Wind".
At the end of the radio series, the television series and the novel The Restaurant at the End of the Universe, Arthur Dent, having escaped the Earth's destruction, potentially has some of the computational matrix in his brain. He attempts to discover The Ultimate Question by extracting it from his brainwave patterns, as abusively[6] suggested by Ford Prefect, when a Scrabble-playing caveman spells out "forty two". Arthur pulls random letters from a bag, but only gets the sentence "What do you get if you multiply six by nine?"
"Six by nine. Forty two."
"That's it. That's all there is."
"I always thought something was fundamentally wrong with the universe."[5]
Six times nine is actually fifty-four; the answer is deliberately wrong for that question because the question was miscomputed. The program on the "Earth computer" should have run correctly, but the unexpected arrival of the Golgafrinchans on prehistoric Earth caused input errors into the system—computing the wrong question (because of the garbage in, garbage out rule). Therefore, the question in Arthur's subconscious was invalid all along.[5]
Quoting Fit the Seventh of the radio series, on Christmas Eve, 1978:
Narrator: There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory mentioned, which states that this has already happened.[7]
Some readers who were trying to find a deeper meaning in the passage soon noticed a certain veracity when using base-13; 613 × 913 is actually 4213 (as (4 × 13) + 2 = 54, i.e. 54 in decimal is equal to 42 expressed in base-13).[7]:128 When confronted with this, the author claimed that it was a mere coincidence, stating that "I may be a sorry case, but I don't write jokes in base 13."[8]
In Life, the Universe and Everything, a character named "Prak," who "knows all that is true," confirms that 42 is indeed The Answer, and that it is impossible for both The Answer and The Question to be known in the same universe, as they will cancel each other out and take the Universe with them—to be replaced by something even more bizarre (as described in the first theory) and that it may have already happened (as described in the second).[9] Though the question is never found, 42 is the table number at which Arthur and his friends sit when they arrive at Milliways at the end of the radio series. Likewise, Mostly Harmless ends when Arthur stops at a street address identified by his cry of, "There, number 42!" and enters the club Beta, owned by Stavro Mueller (Stavromula Beta). Shortly after, the Earth is destroyed in all existing incarnations.
Why the number 42?Edit
Douglas Adams was asked many times why he chose the number 42. Many theories were proposed, including that 42 is 101010 in base-2 binary code, that light refracts through a water surface by 42 degrees to create a rainbow, or that light requires 10−42 seconds to cross the diameter of a proton.[10] Adams rejected them all. On 3 November 1993, he gave this answer[11] on alt.fan.douglas-adams:
The answer to this is very simple. It was a joke. It had to be a number, an ordinary, smallish number, and I chose that one. Binary representations, base thirteen, Tibetan monks are all complete nonsense. I sat at my desk, stared into the garden and thought '42 will do' I typed it out. End of story.
Adams described his choice as "a completely ordinary number, a number not just divisible by two but also six and seven. In fact it's the sort of number that you could without any fear introduce to your parents."[7]
While 42 was a number with no hidden meaning, Adams explained in more detail in an interview with Iain Johnstone of BBC Radio 4 (recorded in 1998 though never broadcast)[12] to celebrate the first radio broadcast's 20th anniversary. Having decided it should be a number, he tried to think what an "ordinary number" should be. He ruled out non-integers, then he remembered having worked as a "prop-borrower" for John Cleese on his Video Arts training videos. Cleese needed a funny number for the punchline to a sketch involving a bank teller (himself) and a customer (Tim Brooke-Taylor). Adams believed that the number that Cleese came up with was 42 and he decided to use it.[13]
Adams had also written a sketch for The Burkiss Way called "42 Logical Positivism Avenue", broadcast on BBC Radio 4 on 12 January 1977[14] – 14 months before The Hitchhiker's Guide first broadcast "42" in Fit the Fourth, 29 March 1978.[7]
Burkiss Way, "Logical Positivism" sketch excerpt
An excerpt from Douglas Adams' The Burkiss Way sketch, "Logical Positivism" excerpt
Problems playing this file? See media help.
In January 2000, in response to a panellist's "Where does the number 42 come from?" on the radio show Book Club, Adams explained that he was "on his way to work one morning, whilst still writing the scene, and was thinking about what the actual answer should be. He eventually decided that it should be something that made no sense whatsoever – a number, and a mundane one at that. And that is how he arrived at the number 42, completely at random."
Stephen Fry, a friend of Adams, claims that Adams told him "exactly why 42", and that the reason is "fascinating, extraordinary and, when you think hard about it, completely obvious."[15] However, Fry says that he has vowed not to tell anyone the secret, and that it must go with him to the grave. John Lloyd, Adams' collaborator on The Meaning of Liff and two Hitchhiker's fits, said that Adams has called 42 "the funniest of the two-digit numbers."[16]
The number 42 appears frequently in the work of Lewis Carroll, and some critics have suggested that this was an influence. They note, in particular, that Alice's attempt at her times tables (chapter two of Alice's Adventures in Wonderland) breaks down at 4 x 13 answered in base 42,[17][18] which virtually reverses the failure of 'the Question' ("What do you get if you multiply six by nine?"), in that the latter would equal "42" if calculated in base 13. They find further evidence of Carroll's influence in the fact that Adams entitled the episodes of the original radio series of The Hitchhiker's Guide to the Galaxy "fits", the word Carroll used to name the chapters of The Hunting of the Snark.
There is the persistent tale that 42 is Adams' tribute to the indefatigable paperback book, and is the average number of lines on an average page of an average paperback.[19] Another common guess is that 42 refers to the number of laws in cricket, a recurring theme of the books.[20]
42 PuzzleEdit
The 42 puzzle. The shape of the islands in the background spells out 42, and there are 42 coloured balls
The 42 Puzzle is a game devised by Douglas Adams in 1994 for the United States series of The Hitchhiker's Guide to the Galaxy books. The puzzle is an illustration consisting of 42 multi-coloured balls, in 7 columns and 6 rows. Douglas Adams has said,
Everybody was looking for hidden meanings and puzzles and significances in what I had written (like 'is it significant that 6×9 = 42 in base 13?' As if.) So I thought that just for a change I would actually construct a puzzle and see how many people solved it. Of course, nobody paid it any attention. I think that's terribly significant.[21]
In the puzzle the question is unknown, but the answer is already known to be 42. This is similar to the book where the "Answer to the Ultimate Question of Life, the Universe, and Everything" is known but not the question. The puzzle first appeared in The Illustrated Hitchhiker's Guide to the Galaxy. It was later incorporated into the covers of all five reprinted "Hitchhiker's" novels in the United States.
Adams has described the puzzle as depicting the number 42 in ten different ways. Six possible questions are:[22]
(1) How many spheres are in the diagram? (six rows of seven is 42) (2) What position in the grid does the Earth occupy? (42)
(3) The barcode on one of the spheres is the number 42 as an Interleaved 2 of 5 barcode
(4) Considering red-hued spheres (red, purple, orange, black) as a '1' and those without as a '0', what number does each line represent in decimal form? (In binary, each line reads '0101010', or '42' in decimal form.) (5) What number do the blue-tinted spheres (blue, green, purple, black) spell out? (Similar to a colour blindness test.) (42) (6) What number is represented by Roman numerals spelled out by the yellow-tinted spheres (yellow, orange, green, black) in the first three rows? (XLII = 42)
On the Internet and in softwareEdit
The number 42 and the phrase, "Life, the universe, and everything" have attained cult status on the Internet. "Life, the universe, and everything" is a common name for the off-topic section of an Internet forum and the phrase is invoked in similar ways to mean "anything at all". Many chatbots, when asked about the meaning of life, will answer "42". Several online calculators are also programmed with the Question. Google Calculator will give the result to "the answer to life the universe and everything" as 42, as will Wolfram's Computational Knowledge Engine.[23] Similarly, DuckDuckGo also gives the result of "the answer to the ultimate question of life, the universe and everything" as 42.[24] In the online community Second Life, there is a section on a sim called "42nd Life." It is devoted to this concept in the book series, and several attempts at recreating Milliways, the Restaurant at the End of the Universe, were made.
In OpenOffice.org software (prior to version 3.4) if "=ANTWORT("Das Leben, das Universum und der ganze Rest") (German for =ANSWER("life, the universe and everything")) is typed into any cell of a spreadsheet, the result is 42.[25]
ISO/IEC 14519-2001/ IEEE Std 1003.5-1999, IEEE Standard for Information Technology – POSIX(R) Ada Language Interfaces – Part 1: Binding for System Application Program Interface (API) , uses the number 42 as the required return value from a process that terminates due to an unhandled exception. The Rationale says "the choice of the value 42 is arbitrary" and cites the Adams book as the source of the value.
The standard for Tagged Image File Format TIFF defines in its Image File Header bytes 2 and 3 to denominate a 'version number' 42. In revision 5.0 the specification explained the choice with "This number, 42 (2A in hex), is not to be equated with the current Revision of the TIFFspecification. In fact, the TIFF version number (42) has never changed, and probably never will. If it ever does, it means that TIFF has changed in some way so radical that a TIFF reader should give up immediately. The number 42 was chosen for its deep philosophical significance."[26] The later versions have eliminated the lengthy description, but kept the number fixed at 42 anyway.[27]
The random seed chosen to procedurally create the whole universe of the online multi-player computer game EVE Online was chosen as 42 by its lead game designer in 2002.[28]
In the computer game Gothic "42" is a code that deactivates all activated cheats. After typing "42" in a right place, text "What was the question?" appears.
The OpenSUSE team decided the next version will be based on SUSE Linux Enterprise Desktop and named "Leap 42". The number 42 was chosen as a reference to the answer to life, the universe and everything.[29]
In mathematicsEdit
Mathematicians found a question whose answer is 42: what is the largest (rational) number n such that there are positive integers p, q, r such that
1 − 1 / p − 1 / q − 1 / r = 1 / n {\displaystyle 1-1/p-1/q-1/r=1/n}
While some may argue that a planet sized supercomputer should come up with something more spectacular to show, mathematicians believe it is more interesting than the mathematically equally correct, but positively boring question: how much is 40 + 2. It came up in the 19th century studying Riemann surfaces in Hurwitz automorphism theorem[30] (Riemann surfaces are named after Bernhard Riemann, better known for the Riemann hypothesis. For a Riemann surface with negative Euler characteristic e = 2 − 2 g {\displaystyle e=2-2g}
the number of symmetries is finite. What is the smallest number n {\displaystyle n}
such that the number of symmetries is at most n | e | {\displaystyle n|e|}
? Hurwitz showed that the answer is the same as the answer to the question above, i.e. n = 42 {\displaystyle n=42}
. This is closely related to the fact that the largest triangle that tiles the Hyperbolic plane has angles π/2, π/3, and π/7. Such a tile triangle has the smallest possible angle deficit compared to a triangle in the normal Euclidean plane π ( 1 − 1 / 2 − 1 / 3 − 1 / 7 ) = ( 1 / 42 ) π {\displaystyle \pi (1-1/2-1/3-1/7)=(1/42)\pi }
.[31] In addition, the Ravenous Bugblatter Beast of Traal group (colloquially known as "the monster" group) is a (2,3,7) triangle group i.e. one that comes up as symmetry of a Riemann surface with a maximal number of symmetries and as a symmetry of Hyperbolic tiling made up of combinations of triangles with angle angles π/2, π/3, and π/7.[32] Rumours that mathematicians are grey mice have been disproved, however.[33][34][35]
In 2019, 42 became the last integer to be solved for the Diophantine equation, which seeks to express every number between 1 and 100 as the sum of three cubes. The solution, which required a million hours of processing time, is (-80538738812075974)^3 + (80435758145817515)^3 + (12602123297335631)^3 = 42. This led to news articles claiming they may have found the meaning of life.[36]
Cultural referencesEdit
The Allen Telescope Array, a radio telescope used by SETI, has 42 dishes in homage to the Answer.[37]
In the American TV show Lost, 42 is the last of the mysterious numbers 4, 8, 15, 16, 23, and 42. In an interview with Lostpedia, producer David Fury confirmed this was a reference to Hitchhiker's.[38]
The British TV show The Kumars at No. 42 is so named because show creator Sanjeev Bhaskar is a Hitchhiker's fan.[39]
The band Coldplay's album Viva la Vida includes a song called "42". When asked by Q if the song's title was Hitchhiker's-related, Chris Martin said, "It is and it isn't."[40]
The band Level 42 chose its name in reference to the book.[41]
The episode "42" of the British science fiction television series Doctor Who was named in reference to the Answer. Writer Chris Chibnall acknowledged that "it's a playful title".[42]
Ken Jennings, defeated along with Brad Rutter in a Jeopardy! match against IBM's Watson, writes that Watson's avatar which appeared on-screen for those games showed 42 "threads of thought," shown as colorful lines spinning around Watson's logo, and that the number was chosen in reference to this meme.[43]
The Hitchhiker knitting pattern, designed by Martina Behm, is a scarf with 42 teeth.[44]
In The Flash, Season 4, Episode 1, Cisco in trying to decipher what Barry is writing explicitly says that what Barry says might solve answer to the Life, the Universe and Everything, which Caitlin suggests is 42.[45]
In The X-Files, Fox Mulder lives in apartment 42. This has been acknowledged by the show's creator, Chris Carter, as a reference to Hitchhikers.[46]
The number 47 appears often throughout the Star Trek franchise. When producer Rick Berman was asked about the unusual frequency of the number, he stated, "47 is 42, corrected for inflation." [47][48]
Don't PanicEdit
Elon Musk's Tesla Roadster in space with the entertainment system displaying "DON'T PANIC"
In the series, Don't Panic is a phrase on the cover of The Hitchhiker's Guide to the Galaxy.[4] The novel explains that this was partly because the device "looked insanely complicated" to operate, and partly to keep intergalactic travellers from panicking.[49] "It is said that despite its many glaring (and occasionally fatal) inaccuracies, the Hitchhiker's Guide to the Galaxy itself has outsold the Encyclopedia Galactica because it is slightly cheaper, and because it has the words 'DON'T PANIC' in large, friendly letters on the cover."[4]
Arthur C. Clarke said Douglas Adams' use of "don't panic" was perhaps the best advice that could be given to humanity.[50]
On 6 February 2018 SpaceX launched the Falcon Heavy rocket, carrying Elon Musk's Tesla Roadster which had "DON'T PANIC!" written on the screen on the dashboard as a reference to the series.[citation needed]
Knowing where one's towel isEdit
Towels in Innsbruck with the words "DON'T PANIC" on Towel Day
Somebody who can stay in control of virtually any situation is somebody who is said to know where their towel is. The logic behind this statement is presented in chapter 3 of The Hitchhiker's Guide to the Galaxy thus:
... a towel has immense psychological value. For some reason, if a strag (strag: nonhitchhiker) discovers that a hitchhiker has his towel with him, he will automatically assume that he is also in possession of a toothbrush, washcloth, soap, tin of biscuits, flask, compass, map, ball of string, gnat spray, wet-weather gear, space suit etc., etc. Furthermore, the strag will then happily lend the hitchhiker any of these or a dozen other items that the hitchhiker might accidentally have "lost". What the strag will think is that any man who can hitch the length and breadth of the galaxy, rough it, slum it, struggle against terrible odds, win through, and still knows where his towel is, is clearly a man to be reckoned with.
Adams got the idea for this phrase when he went travelling and found that his beach towel kept disappearing. In The Hitchhiker's Guide to the Galaxy -The Radio Scripts, his friends describe how he would always "mislay" his towel. On Towel Day, fans commemorate Adams by carrying towels with them.[citation needed]
Mostly HarmlessEdit
The only entry about Earth in the Guide used to be "Harmless", but Ford Prefect managed to change it a little before getting stuck on Earth. "Mostly Harmless" provoked a very upset reaction from Arthur when heard. Those two words are not what Ford submitted as a result of his research—merely all that was left after his editors were done with it. The term is the title of the fifth book in the Hitchhiker "trilogy ". Its popularity is such that it has become the definition of Earth in many standard works of sci-fi reference, like The Star Trek Encyclopedia. Additionally, "Harmless" and "Mostly Harmless" both feature as ranks in the computer game Elite and its sequels. Also, in World of Warcraft, there is a rifle that fires (mostly) harmless pellets.[51] In the MMORPG RuneScape, there is an island called Mos Le Harmless (Mostly Harmless). Low-scoring players in the multiplayer version of the game Perfect Dark and GoldenEye 007 are awarded with the designation "mostly harmless". In the 2008 edition of the board game Cosmic Encounter, the human race is given the attribute "Mostly Harmless". In the game Kerbal Space Program, there is an atomic rocket motor with the description "mostly harmless". Another reference is in the book title Mostly Harmless Econometrics.[52]
Not entirely unlikeEdit
In chapter 17 of the novel The Hitchhiker's Guide to the Galaxy, Arthur Dent tries to get a Nutrimatic drinks dispenser to produce a cup of tea. Instead, it invariably produces a concoction (which most people found unpleasant) that is "almost, but not quite, entirely unlike tea".
One of the primary goals of the player, as Arthur Dent, in the computer game The Hitchhiker's Guide to the Galaxy, is to thwart the machine and find some decent tea, a mission that the player is constantly reminded of by the inventory item "no tea". According to the Jargon File, the briefer "not entirely unlike" has entered hacker jargon.[53]
Share and EnjoyEdit
"Sirius Cybernetics Corporation" redirects here. For real corporations, see Sirius (disambiguation).
"Share and Enjoy" is the slogan of the Sirius Cybernetics Corporation Complaints Division. In the radio version, this phrase had its own song (sung in Fit the Ninth of the radio series), which was sung by a choir of robots during "special occasions". The Sirius Cybernetics Corporation tends to produce inherently faulty goods, which renders the statement ironic since few people would want to "Share and Enjoy" something that was defective. Among the design flaws is the choir of robots that perform this song: they sing a tritone out of tune with the accompaniment. The Guide relates that the words "Share and Enjoy" were displayed in illuminated letters three miles high near the Sirius Cybernetics Complaints Division, until their weight caused them to collapse through the underground offices of many young executives. The upper half of the sign that now protrudes translates in the local tongue as "Go stick your head in a pig", and is lit up only for special celebrations.
The episode Fit the Twentieth of the radio series features a personal computer OS booting sound (à la The Microsoft Sound) set to the tune of "Share and Enjoy". Furthermore, Fit the Twenty-First of the radio series, the last episode in the adaptation of the novel So Long, and Thanks for All the Fish, features a polyphonic ringtone version of the tune. The "Share and Enjoy" tune also is used in the TV series as the backing for a Sirius Cybernetics Corporation robot commercial (slogan: "Your plastic pal who's fun to be with!").
So Long, and Thanks for All the FishEdit
After mice, the second most intelligent species on Earth were the dolphins.
The dolphins had long known of the impending demolition of Earth and had made many attempts to alert mankind to the danger...The last ever dolphins message was misinterpreted as a surprisingly sophisticated attempt to do a double backward somersault through a hoop whilst whistling "The Star-Spangled Banner," but in fact the message was this: "So Long, and Thanks for All the Fish."
—  Douglas Adams, The Hitchhiker's Guide to the Galaxy
The line was also the title of the fourth book in the trilogy, and appears in that book as a message inscribed on crystal bowls left as parting gifts from the dolphins to the human race. Its popularity was such that it was the title of the opening song for the 2005 movie The Hitchhiker's Guide to the Galaxy.
The phrase was spoofed for the NOFX album So Long, and Thanks for All the Shoes.[citation needed]
The phrase was also spoofed for the All Time Low track "So Long, and Thanks for All the Booze", from the appropriately-titled album Don't Panic.[citation needed]
This is also the title of a track by A Perfect Circle on their 2018 album Eat The Elephant. At their concerts this track was dedicated to the people in the crowd who knew where their towels are. Also, the video features flying dolphins in reference to HHGTTG.[citation needed]
Wikiquote has quotations related to: The Hitchhiker's Guide to the Galaxy
42 (number)
Somebody Else's Problem
^ Gribbin, John (26 May 1990). "Review: Beyond the barriers of time". www.newscientist.com. NewScientist. Retrieved 10 October 2019. ... while Wolf quotes Douglas Adams, Lily Tomlin and himself in chapter headings...
^ Adams, Tim (17 September 2006). "Masters of the universe". www.theguardian.com. The Guardian. Retrieved 10 October 2019. We talk a little about Douglas Adams, who is the dedicatee of his book
^ Farndale, Nigel (20 March 2008). "Michio Kaku: Mr Parallel Universe". www.telegraph.co.uk. The Telegraph. Retrieved 10 October 2019. As I listen, I recall where I have read ideas as fanciful as his before: in The Hitchhiker's Guide to the Galaxy. He is a fan, it turns out. Met the author once.
^ a b c Adams, Douglas (1979). The Hitchhiker's Guide to the Galaxy. Pocket Books. p. 3. ISBN 0-671-46149-4.
^ a b c Adams, Douglas (1 January 1980). The Restaurant at the End of the Universe. ISBN 0-345-39181-0.
^ episode 6 of the TV series
^ a b c d Adams, Douglas (1985). Perkins, Geoffrey (ed.). The Original Hitchhiker Radio Scripts. London: Pan Books. ISBN 0-330-29288-9.
^ Diaz, Jesus. "Today Is 101010: The Ultimate Answer to the Ultimate Question". io9. Retrieved 8 May 2017.
^ Adams, Douglas (1982). Life, the Universe and Everything. New York: Harmony Books. ISBN 0-330-26738-8.
^ Minearo, Peter; Smith, Mike (3 April 2007). "In Hitchhiker's Guide to the Galaxy, 42 is the number from which all meaning could be derived". CIO (chief information officer) Magazine. Retrieved 3 March 2008.
^ "Why 42 ?". alt.fan.douglas-adams. Retrieved 1 September 2007 – via Google Groups.
^ This interview is contained on Douglas Adams's Guide to The Hitch-Hiker's Guide to the Galaxy (BBC Cassette ISBN 0-563-55236-0) and The Hitchhiker's Guide to the Galaxy – The Collectors Edition (BBC CD ISBN 0-563-47702-4)
^ Several attempts by fans to find this particular video have been unsuccessful and it is possible it may never have been published or has since been deleted from use.
^ This is found on the Douglas Adams at the BBC CD set (ISBN 0-563-49404-2)
^ "What on earth is 42?". BBC News. 7 March 2008. Retrieved 22 March 2008.
^ John Lloyd speaking at the 30th Anniversary Hitchhiker's recording at Douglas Adams Memorial Lecture on Wednesday 12 March 2008 at The Royal Geographical Society.
^ Nediger, Will (February 2005). "Lewis Carroll and Douglas Adams". CBS Interactive Business Library. Archived from the original on 29 June 2012. Retrieved 13 May 2018.
^ Woolf, Jenny (2010). The Mystery of Lewis Carroll. London: Haus Books. ISBN 978-1-90659-868-6.
^ Vernon, Mark (7 March 2008). "What on earth is 42?". BBC News. Retrieved 9 June 2008.
^ Gill, Peter (3 September 2013). "Douglas Adams and the cult of 42". The Guardian. Retrieved 7 September 2013.
^ "Cool questions and answers with Douglas Adams". Archived from the original on 23 May 2007. Retrieved 19 August 2007.
^ "4.8 Probable Solution to the Ill Guide Puzzle (Douglas Adams)". Stason.org. Retrieved 19 August 2007.
^ "Answer to life, the universe, and everything". Wolfram Alpha. Retrieved 26 July 2011.
^ "The answer to the ultimate question of life, the universe and everything". Duck Duck Go. 10 October 2010. Retrieved 26 July 2011.
^ "Easter Eggs". OpenOffice.org Wiki. 21 April 2010. Retrieved 26 July 2011.
^ "TIFF Specification 5.0". Retrieved 28 January 2018.
^ "[ITU] TIFF Specification 6.0" (PDF). Retrieved 28 January 2018.
^ Emilsson, Kjartan (Speaker) (23 March 2012). DUST 514 Seeding The Universe (Television production). Iceland: CCP Games.
^ "openSUSE Leap 42 Is a New Version That Will Change the openSUSE Project". Softpedia. 7 July 2015. Retrieved 23 September 2015.
^ Hurwitz, A. (1893), "Über algebraische Gebilde mit Eindeutigen Transformationen in sich", Mathematische Annalen, 41 (3): 403–442, doi:10.1007/BF01443420, JFM 24.0380.02.
^ Coxeter, H.S.M. (1973), Regular Polytopes (Third ed.), Dover Publications, ISBN 0-486-61480-8
^ Wilson, Robert A} (2001). "The Monster is a Hurwitz group" (PDF). Journal of Group Theory. Berlin; New York: Walter de Gruyter & Co., c1998-. 4 (4): 367–374.
^ Cartier, Pierre (2001). "A mad day's work: from Grothendieck to Connes and Kontsevich The evolution of concepts of space and symmetry" (PDF). Bulletin of the American Mathematical Society. 38 (4): 389–408. doi:10.1090/S0273-0979-01-00913-2, English translation of Cartier (1998).
^ Dyson, Freeman (2018). Maker of Patterns: An Autobiography Through Letters. Liveright Publishing.
^ Macrae, Norman (1999). John Von Neumann-the Scientific Genius who Pioneered the Modern Computer. American Mathematical Society.
^ Specktor, Brandon. "Two Mathematicians Just Solved a Decades-Old Math Riddle — and Possibly the Meaning of Life". www.LiveScience.com. LiveScience. Retrieved 9 September 2019.
^ Hayes, Jacqui (2010). "Silent witness". Cosmos. Archived from the original on 5 April 2012. Retrieved 20 August 2010.
^ "Interview with David Fury". Lostpedia. 20 May 2008. Retrieved 26 July 2011.
^ "10 things we didn't know this time last week". BBC News. 14 November 2003. Retrieved 17 February 2009.
^ "Coldplay: Viva La Vida". Q. Archived from the original on 15 July 2009. Retrieved 9 March 2009.
^ Carter, Mandy (2006). "Interview: Mark King – Level 42". Level 42. Archived from the original on 7 September 2012. Retrieved 4 April 2009.
^ Darlington, David (April 2007). "Script Doctors: Chris Chibnall". Doctor Who Magazine. No. 381. pp. 24–30.
^ Jennings, Ken (16 February 2011). "My Puny Human Brain". Slate.
^ Behm, Martina (2010). "Hitchhiker". Ravelry. Retrieved 5 June 2015.
^ "The Flash Reborn". IMDb.
^ Hurwitz, Matt; Knowles, Chris (2008). The Complete X-Files: Behind the Scenes, the Myths, and the Movies. San Rafael, California: Insight Editions. ISBN 978-1-93378-472-4.
^ "Occurrences Of The 47 Reference In Movies & Television". Higgypop.
^ "47". Memory Alpha.
^ Adams, Douglas (1979). The Hitchhiker's Guide to the Galaxy. Pocket Books. p. 27. ISBN 0-671-46149-4.
^ Zebrowski, George (30 June 2008). "Arthur C. Clarke looks back on the lifetime of influences that led him to become a science-fiction Grand Master". Sci Fi Weekly. Archived from the original on 23 July 2008. Retrieved 24 July 2008. The best advice I think was given by Douglas Adams: "Don't panic."
^ "Red Rider Air Rifle". wowhead.com. Retrieved 13 May 2018.
^ "Mostly Harmless Econometrics". mostlyharmlesseconometrics.com. Retrieved 14 July 2020.
^ "Not entirely unlike X". The Jargon File (version 4.4.7).
Further readingEdit
Smith, Mol (2007). 42 – The Answer to Life, The Universe, and Everything. Maurice Smith. ISBN 978-0-9557137-0-5.
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