A Tangled Tale is a collection of ten brief humorous stories by Lewis Carroll (Charles Lutwidge Dodgson), published serially between April 1880 and March 1885 in The Monthly Packet magazine. Arthur B. Frost added illustrations when the series was printed in book form. The stories, or Knots as Carroll calls them, present mathematical problems. In a later issue, Carroll gives the solution to a Knot and discusses readers' answers. The mathematical interpretations of the Knots are not always straightforward. The ribbing of readers answering wrongly — giving their names — was not always well received (see Knot VI below).
In the December 1885 book preface Carroll writes,
- The writer’s intention was to embody in each Knot (like medicine so dexterously, but ineffectually, concealed in the jam of our early childhood) one or more mathematical questions — in Arithmetic, Algebra, or Geometry, as the case might be — for the amusement, and possible edification, of the fair readers of that magazine.
Describing why he was ending the series, Carroll writes to his readers that the Knots were "but a lame attempt." Others were more receptive: In 1888 Stuart Dodgson Collingwood wrote, "With some people, this is the most popular of all his books; it is certainly the most successful attempt he ever made to combine mathematics and humour." They have more recently been described as having "all the charm and wit of his better-known works".
Summary of Knots and solutions
Knot I, Excelsior. Two knights discuss the distance they will have traveled that day, uphill and downhill at different speeds. The older knight obscurely explains the mathematical problem.
- Carroll's Solution: As with most of the Knots, the solution includes: a simplified restatement of the problem, a method to arrive at the solution, the solution, a discussion of readers' solutions, then readers' grades. In his discussion, Carroll relates that one reader accuses the senior knight of untruthfulness (this is rebutted by Carroll, using the knight's tone). Another reader answers the problem by extending the story (this is quoted). The poem of two readers answering the problem is also quoted.
Knot II, Eligible Apartments. Professor Balbus, named after a hero with "anecdotes whose vagueness in detail was more than compensated by their sensational brilliance", is given a problem by students. The number of guests for a party is described in puzzling terms. He in turn creates a mathematical problem for them: two answers are required of readers.
- Solution: The mathematical problem is solved with the aid of a diagram. Those employing "guesswork" are given partial credit. One reader suggests the genealogical problem can be solved by "intermarriages", to which Carroll replies, 'Wind of the western sea,' you have had a very narrow escape! Be thankful to appear in the Class-list at all!
Knot III, Mad Mathesis. Overbearing aunt Mad Mathesis bets her niece that she can select a train from London that will pass more trains than her niece's does. The niece loses, but thinks she has found a solution to win, a second time.
Knot IV, The Dead Reckoning. The two knights of Knot I, in a modern guise, are party to a dispute about the weight of a passengers' bags lost overboard from a ship.
Knot V, Oughts and Crosses. The aunt and niece from Knot III are in an art museum. Trading snipes as before, the aunt evades her niece's logical problem: The niece's preceptress had told her girls, "The more noise you make the less jam you will have, and vice versa." The niece wants to know if this means that if they are silent, they will have infinite jam. Instead, her aunt responds with her own logical problem, throwing in such red herrings as: "The person having the fewest marks wins, unless there's a tie, in which case the person with the most marks wins."
Knot VI, Her Radiancy. Two travelers appear in Kgovjni, a land referenced in earlier Knots. The ruler places them in "the best dungeon, and abundantly fed on the best bread and water" until they resolve a logical problem.
- Solution: Two problems are posed, the first of which is resolved by word-play. Much later, after the solutions to Knot VII, Carroll returns to Knot VI, to describe the second problem in detail, and to rebut readers' criticisms that they were duped, that Carroll is in bad taste giving readers' names out.
Knot VII, Petty Cash. The aunt and niece encounter "by a remarkable coincidence" others who are traveling not only on the same train, but at the same station, on the same day, at the same hour. Lunch bills are muddled due to the aunt's reluctance in writing down numbers that could "easily" be memorized.
- Solution: Carroll gives a solution which "universally" produces an answer, then gives detailed critiques of several other approaches that only "accidentally" give a solution.
Knot VIII, De Omnibus Rebus. The travelers of Knot VI are leaving Kgovjni with relief, when a mathematical problem occurs to one of them.
Knot IX, A Serpent with Corners. The characters of Knot II, and Balbus and his two students, return to give three problems loosely connected by a narrative.
Knot X, Chelsea Buns. Mad Mathesis and her niece return, as well as Balbus and his two students.
- Solution note: The puzzle called The Change of Day is never answered, as Carroll is "waiting for statistics" and is himself "so entirely puzzled by it."
Changes after magazine publication
Changes were made when the stories were published in book form. In the solution to Knot III reader AYR is dropped dropped entirely from discussion. The change causes a comparison with same number of readers getting a perfect score on a previous Knot to be dropped:
- (there is something uncanny about this coincidence: let us hope it will prove to be the beginning of a genuine ghost story).
Other examples of changes in Knot III are "Mad Mathesis dragged her off" to "Mad Mathesis hurried her on", and Clair saying "If I may go the same way round, as I did last time" to "If I may choose my train."
- Robert D. Sutherland: Language and Lewis Carroll, The Hague, Mouton 1970. ISBN 1884718876
- Stuart Dodgson Collingwood The Life and Letters Of Lewis Carroll, Kessinger Publishing 2004. ISBN 1417926252
- Lewis Carroll: The Mathematical Recreations of Lewis Carroll: Pillow Problems and a Tangled Tale, Courier, Dover 1958 (dust jacket)
- Kathleen Blake Play, Games, and Sport: The Literary Works of Lewis Carroll, Cornell University Press 1974. ISBN 0-8014-0834-2
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