Blind Dates

stover calendar trick

A calendar curiosity by Canadian magician Mel Stover:

Offer any month’s calendar to a friend and have him outline a 4×4 square of dates. Ask him to circle any date in that square and cross out the other numbers in its row and column. Have him do this three more times and then add the circled numbers.

You can predict his answer by totaling the numbers in either pair of diagonally opposite corners in the square and doubling that number. Why does this work?

Elevation

http://commons.wikimedia.org/wiki/File:Oikema_-_Projet_de_maison_de_plaisir_-_Plan.jpg

In the 18th century, French architect Claude-Nicolas Ledoux conceived an ideal city — perhaps too ideal. It contained no hospitals or theaters but included a “shelter of the poor man,” a “Pacifère” where quarrels could be settled peaceably, and, most notably, an “Oïkéma,” or house of sexual instruction, which Allan Braham calls “one of the most extreme instances of Ledoux’s gift for architectural metaphor.”

While we’re on this subject: In William Wycherley’s 1675 comedy The Country Wife, the word china becomes a bawdy metaphor, which makes the dialogue livelier than it first appears:

Lady Fidget: And I have been toiling and moiling, for the prettiest Piece of China, my Dear.

Mr. Horner: Nay, she has been too hard for me, do what I could.

Mrs. Squeamish: Oh, Lord, I’ll have some China too, good Mr. Horner, don’t think to give other People China, and me none, come in with me too.

Mr. Horner: Upon my Honour I have none left now.

Mrs. Squeamish: Nay, nay, I have known you deny your China before now, but you shan’t put me off so, come —

Mr. Horner: This Lady had the last there.

Lady Fidget: Yes indeed, Madam, to my certain Knowledge he has no more left.

Mrs. Squeamish: O, but it may be he may have some you could not find.

Lady Fidget: What d’ye think if he had had any left, I would not have had it too? for we Women of Quality never think we have China enough.

Mr. Horner: Do not take it ill, I cannot make China for you all, but I will have a Roll-waggon for you too, another time.

Mrs. Squeamish: Thank you, dear Toad.

Lady Fidget: (to Horner, aside) What do you mean by that promise?

Mr. Horner: Alas, she has an innocent, literal Understanding.

(Thanks, Stephenson.)

Wave Function

From a description of Hawaiian amusements by first lieutenant James King on James Cook’s third expedition to the Pacific, 1779:

But a diversion the most common is upon the Water, where there is a very great Sea, & surf breaking on the Shore. The Men sometimes 20 or 30 go without the Swell of the Surf, & lay themselves flat upon an oval piece of plank about their Size & breadth, they keep their legs close on top of it, & their Arms are us’d to guide the plank, they wait the time of the greatest Swell that sets on Shore, & altogether push forward with their Arms to keep on its top, it sends them in with a most astonishing Velocity, & the great art is to guide the plank so as always to keep it in a proper direction on the top of the Swell, & as it alters its directs. If the Swell drives him close to the rocks before he is overtaken by its break, he is much prais’d. On first seeing this very dangerous diversion I did not conceive it possible but that some of them must be dashed to mummy against the sharp rocks, but just before they reach the shore, if they are very near, they quit their plank, & dive under till the Surf is broke, when the piece of plank is sent many yards by the force of the Surf from the beach. The greatest number are generally overtaken by the break of the swell, the force of which they avoid, diving & swimming under the water out of its impulse. By such like excercises, these men may be said to be almost amphibious. The Women could swim off to the Ship, & continue half a day in the Water, & afterwards return. The above diversion is only intended as an amusement, not a tryal of Skill, & in a gentle swell that sets on must I conceive be very pleasant, at least they seem to feel a great pleasure in the motion which this Exercise gives.

This is believed to be the first written account of surfing.

Tangled Tale

shoelace puzzle

A shoelace is lying on the floor, and I’m too nearsighted to see how the lace crosses itself at points A, B, and C. If I pull on the ends, what’s the probability that it will produce a knot?

Click for Answer

Drop Quote

http://en.wikipedia.org/wiki/Mike_Bidlo

This is not a Jackson Pollock painting. It’s a painstaking replica by Chicago artist Mike Bidlo, who titled it, aptly, Not Pollock.

“My work is perhaps an extreme example of this strain of art which references other art because it directly mirrors the image, scale, and materials of the original,” Bidlo told Robert Rosenblum in 2003. “Whatever differences appear in my work are a consequence of my working method and not an attempt at projecting a personal style.”

Is this art? If not, why not?

(Pollock himself had an uphill fight — he received this letter in August 1949:)

Dear Mr. Pollock,

Just a few lines to tell you that my seven year old son Manning couldn’t get over your picture Number Nine. Frankly, it looked like some of his fingerpainting at school to me. However, he insisted that I write you to tell you that he cut it out of the ‘Life’ and put it in his scrap-book — the first painting that he has ever cut out —

He really has quite good taste as you can tell by the Cocker — Snafu — he is holding. He wanted you to have his picture in exchange for his copy of No. 9 — which he loves —

Sincerely,

Mrs. Helen K. Sellers

Near Thing

‘Well, do you know the one,’ I began, ‘in which two geologists converse in a cafe? One of them says: ‘Yes, unfortunately fifteen billion years from now the Sun will cool, and then all life on Earth will perish.’ A card-player nearby has been half listening to the joke, and turns in terror to the geologist: ‘What did you say? In how many years will the Sun cool?’ ‘Fifteen billion years,’ the scientist replies. The card-player lets out a sigh of relief: ‘Oh, I was afraid you said fifteen million!’

— László Feleki in Impact of Science on Society, 1969

Cool Runnings

http://www.google.com/patents/US4790531

Indoor ski slopes tend to be short because they’re expensive to build. In 1986 Nobuyuki Matsui proposed a space-saving solution: Arrange the slope in a helix or a figure eight around a support tower that contains an elevator. Skiers can ride to the top and enjoy a long continuous run back to the bottom. To reduce cooling costs, the whole thing can be built underground (with a ski lodge at the top) and all the snow-making accomplished within a special enclosure that works its way down the slope.

“In order to simulate actual outdoor skiing conditions, provisions are made to vary the steepness of the slope from place to place. In addition, facilities are provided to produce random simulated moguls or an entire mogul field. Thus, during one run of the slope, most, if not all, of the conditions encountered on natural outdoor slopes may be simulated and incorporated into the run.”

No Sale

http://commons.wikimedia.org/wiki/File:F%C3%A9lix_Valloton,_Portrait_of_Gertrude_Stein_1907.jpg

Ronald Knox reviews Gertrude Stein in the Dublin Review, 1927:

There is oddly not nearly so much difficulty about reading the beginning of a book by Gertrude Stein like this book of hers called Composition as Explanation (Hogarth Essays) as there is in reading it later on when it gets nearer the end. It is all written like this with no punctuation of course but it does sound as if it meant something. Every now and then a word or two is written twice over twice over but of course that may be the printer. It is a little confusing to be told that people are the composing of the composition that at the time they are living is the composition of the time in which they are living, but probably it all works out somehow. She goes on like this for about thirty pages and then she says now that is all. But it isn’t it isn’t it isn’t. It’s only about half. She starts putting in headlines after that to symbolically no doubt make her meaning clearer, but it isn’t clearer. It is ever so much not clearer. SITWELL EDITH SITWELL.

She says that quite suddenly in capitals as if it were a line of Onward Christian Soldiers. And in this part of the book all the parts of speech get mixed up anyhow as if she had been taking a lesson in typewriting. The quick brown fox jumps over the lazy dog lazy dog lazy fox the quick jumps jumps brown. There is only one sentence in this part which is English, it says toasted susie is my ice-cream, and that is not sense, is it? So awfully not sense. I suppose she must either think it looks pretty or think it sounds pretty when you read it but it doesn’t it doesn’t either it really doesn’t.

“At dinner I sat next to James Branch Cabell who asked me, Is Gertrude Stein serious?” remembered Alice B. Toklas. “Desperately, I replied. That puts a different light on it, he said. For you, I said, not for me.”

Spade Work

http://commons.wikimedia.org/wiki/File:Map_of_Cocos_from_Pacific_Islands,_vol._2_(Geographical_Handbook_Series,_1943).jpg

August Gussler was persistent. Convinced that Costa Rica’s tiny Cocos Island hid the loot of generations of pirates, the German adventurer set up camp there and in 1889 started digging.

The island occupies only 9 square miles, but it’s crowded with the ghosts of wealthy criminals, including English buccaneers Edward Davis and Bartholomew Sharp, Portuguese pirate Benito Bonito, and Captain William Thompson, who, entrusted with $60 million during an uprising in Lima in 1820, had turned criminal and kept it for himself. All of these, it was said, had hid their loot in the caves of Cocos, whose location 500 miles off the coast had made it an ideal haven for pirates plying the South Seas.

To aid in his search, Gussler had made himself a student of the island’s history. Bonito, he told one visitor, had buried “three hundred thousand pounds’ weight of silver and silver dollars, in a sandstone cave in the side of the mountain. Then he laid kegs of powder on top of the cave and blew away the face of the cliff. In another excavation he placed gold bricks, 733 of them, four by three inches in size, and two inches thick, and 273 gold-hilted swords, inlaid with jewels. On a bit of land in the little river, he buried several iron kettles filled with gold coin.”

Alas, it was hidden remarkably well. In 1908, when Gussler gave up his quest, he had found six gold coins.