One-Sided Story

In the runup to Thailand’s 2001 elections, Thai Rak Thai party founder Thaksin Shinawatra faced allegations of corruption. The Bangkok Post‘s “week in review” email examined the charges against him, his attempts avoid the media, his reputation, and the Internet’s reaction. It used these paragraph headings:

Thaksin cited
Thaksin sighted
Thaksin slighted
Thaksin sited

In Indexers and Indexes in Fact and Fiction, Hazel K. Bell writes, “Clearly the editor is an indexer manqué.”

Amnesia

langstaff chess puzzle

W. Langstaff offered this conundrum in Chess Amateur in 1922. White is to mate in two moves. He tries playing 1. Ke6, intending 2. Rd8#, but Black castles and no mate is possible. But by castling Black shows that his last move must have been g7-g5. Knowing this, White chooses 1. hxg6 e.p. rather than 1. Ke6. Now if Black castles he can play 2. h7#.

“Not so fast!” Black protests. “My last move was Rh7-h8, not g7-g5, so you can’t capture en passant.”

“Very well,” says White. “If you can’t castle, then I play 1. Ke6.” And we’re back where we started.

“What was really Black’s last move?” asks Burt Hochberg in Chess Braintwisters (1999). “If a position has a history, it can have only a single history, and Black would not be able to choose what his last move was any more than I can choose today what I had for dinner last night.”

“This is not a real game, however, but a problem in chess logic. The position’s history does not exist in actuality but only as a logical construct.”

In a Word

aeolistic
adj. long-winded

[Edmund] Falconer’s Oonagh, or, The Lovers of Lismona opened one evening in 1866 at half-past seven. By midnight most of the audience had left; by two o’clock in the morning only a few sleeping critics were still there. At three o’clock the stage crew brought the curtain down with the action still in progress and the play was taken off.

The Methuen Drama Dictionary of the Theatre, 2013

Beatty Sequences

Here’s another interesting source of complementary sequences. Take any positive irrational number, say \sqrt{2}, and call it X. Call its reciprocal Y; in this case Y = 1/\sqrt{2} = \sqrt{2}/2, or about 0.7. Add 1 to each of X and Y and we get

1 + X ≈ 2.4

1 + Y ≈ 1.7.

Now make a table of the approximate multiples of 1 + X and 1 + Y:

beatty sequences

If we drop the fractional part of each number in the table, we’re left with two complementary sequences — every number 1, 2, 3, … appears in one sequence or the other, but never in both.

They’re called Beatty sequences, after Sam Beatty of the University of Toronto, who discovered them in 1926. A pretty proof by A. Ostrowski and J. Hyslop appears in the March 1927 issue of the American Mathematical Monthly and in Ross Honsberger’s Ingenuity in Mathematics (1970).

A House Afire

https://commons.wikimedia.org/wiki/File:Poster_-_Gone_With_the_Wind_02.jpg

If box-office receipts are adjusted for inflation, Gone With the Wind is still the highest-grossing film of all time, with earnings of $3.4 billion in 2014 dollars.

After the film’s 1939 premiere in Atlanta, playwright Moss Hart wired producer David O. Selznick:

OH, ALL RIGHT, GO AHEAD AND HAVE A VULGAR COMMERCIAL SUCCESS!

A Hidden Economy

During the American Civil War, enemy soldiers would sometimes meet to barter. Tobacco was hard to get in the North, and coffee was scarce in the South, so, where it could be done safely, soldiers would meet between the lines to trade.

In some cases this was done across distances. If a river or lake separated the lines, a tiny boat would be laden with commodities and sent to the other side, where it would be unloaded and filled with exchange cargoes, as agreed on by shouting and signaling across the water. On the Rappahannock early in 1863 a group of New Jersey soldiers received a shipment “by miniature boat six inches long.” It carried this note:

Gents U.S. Army

We send you some tobacco by our Packet. Send us some coffee in return. Also a deck of cards if you have them, and we will send you more tobacco. Send us any late papers if you have them.

Jas. O. Parker
Co. H. 17th Regt. Miss. Vols.

Alfred S. Roe, who served in a New York artillery unit, recalled that near Petersburg in the winter of 1864, “a certain canine of strictly impartial sentiments” was “taught to respond to a whistle from either side. Thus with a can of coffee suspended from his neck he would amble over to the Johnnies, and when they had replaced coffee with tobacco he would return in obedience to Union signals, intent only on the food reward both sides gave him.”

(From Bell I. Wiley, The Life of Billy Yank: The Common Soldier of the Union, 1952.)

Unquote

“Faced with the choice between changing one’s mind and proving that there is no need to do so, almost everyone gets busy on the proof.” — John Kenneth Galbraith

Podcast Episode 91: Voyage of the Damned

https://commons.wikimedia.org/wiki/File:StLouisHamburg.jpg

In 1939, an ocean liner carrying 900 Jewish refugees left Nazi Germany seeking sanctuary in North America, but it was turned away by every nation it appealed to. In this week’s episode of the Futility Closet podcast we’ll follow the so-called “voyage of the damned” and the plight of its increasingly desperate passengers.

We’ll also discuss the employment prospects for hermits in Seattle and puzzle over the contentment of a condemned woman.

See full show notes …

Point of Interest

https://commons.wikimedia.org/wiki/File:Jungholz_im_Bezirk_RE.png
Image: Wikimedia Commons

The Austrian village of Jungholz is connected to the rest of the country by a single point, the summit of the mountain Sorgschrofen. The summit marks a “quadripoint,” a point that touches four distinct territories — here, Austria to the north and south and Germany to the east and west.

This raises some philosophical questions. Suppose a stubborn, infinitely skinny Austrian leaves Schattwald (in the south) to visit Jungholz at the same moment that an equally stubborn, infinitely skinny German leaves Bad Hindelang (in the west) to visit his grandmother in Pfronten (in the east). What happens? They can’t sidle past one another; the countries meet at a single, indivisible point. If neither will stand aside while the other passes, then the only solution I can see is for one to hop briefly onto the other’s shoulders.

Now suppose a border guard accosts them at this moment. The two occupy the same point on the Earth’s surface, yet one claims to be in Austria while the other is in Germany. Are they both right? And suppose that the lower man is killed by being jumped upon (he is very attenuated, after all). Which jurisdiction has authority over the crime scene? Who should judge the crime?

Further confusing borders: the Belgian town of Baarle-Hertog and, until recently, Cooch Behar in the Indian state of West Bengal.

(Thanks, Dan.)

Enlightenment

https://pixabay.com/en/fire-easter-easter-fire-flame-717504/

Biologist F.W. Went points out that the physical size of human beings was a critical factor in their mastery of fire. Any flame must maintain a certain size in order to sustain the ignition temperature of its fuel, and a wood or coal fire in particular radiates so much heat that it must maintain a fairly large critical mass in order to keep burning; a small fire will go out.

“Interestingly enough,” Went writes, “a wood or coal fire above the critical size produces just the right amount of heat to warm man in a cave, or a room, or a camping site. But ants or small rodents would have to keep too far away to make a fire economical, or rather, they would be unable to bring up enough wood to keep the fire going. Therefore in an ant society fire is not an economical possibility, and they have developed without its benefits, by operating only while outside temperatures are within the physiological range. Man on the other hand has been able to move into very cold areas by using fire.”

“Man, with his remarkable brain, developed the use of fire, but … only a creature of man’s size could effectively control that fire,” writes Peter S. Stevens in Patterns in Nature (1974). “It happens that a small campfire is the smallest fire that is reliable and controllable. A still smaller flame is too easily snuffed out and a larger one too easily gets out of control. Prometheus was just large enough to feed the flames and to keep from getting burnt.”

(F.W. Went, “The Size of Man,” American Scientist, 56:4 [Winter 1968], 400-413.)