Asleep Awake

At age 13 Marie-Jean-Léon Lecoq, Marquis d’Hervey de Saint-Denys, discovered a rare talent: He could recognize a dream state while he was experiencing it, and could move and act lucidly within the dream. Eventually he filled 25 notebooks with descriptions and illustrations of his adventures in the dream world. These are now lost, but his 1867 book Les Rêves et les Moyens de Les Diriger describes some of his feats:

I change a porcelain vase into a rock-crystal fountain, from which I desire a cooling drink — and this immediately flows out through a golden tap. Some years ago I lost a particular ring whose loss I felt deeply. The memory of it comes to mind, and I should like to find it. I utter this wish, fixing my attention on a piece of coal that I pick up from the fireplace — and immediately the ring is on my finger. The dream continues in the same way until one of the apparitions I have called up charms and captivates me so much that I forget my magician’s role and plunge into a new, more realistic series of illusions.

Saint-Denys believed that almost anyone could learn to do this. One of his suggestions was to keep a dream diary and to make a daily habit of completing it. Like the rest of the student’s life, this habit would then itself become the raw material for his dreams — eventually he would dream of recording a dream. And if he noted the details of a dream he was recording, he would virtually be dreaming lucidly, having smuggled himself into his own slumbers.

True Colors

In the early 1900s, Prussian authorities forbade Danes living in North Frisia from raising the Danish flag, above.

So they bred flag-colored pigs, below. The “Danish protest pig” was probably developed by crossbreeding Jutlandian and Holsteinian marsh pigs, red individuals from the Angeln Saddleback breed, and Tamworth pigs from England. Only around 140 individuals exist worldwide, but Schleswig-Holstein is trying to preserve the breed for its cultural value.
Image: Wikimedia Commons

A 17th-Century Hiccup Cure

In his 1607 Rich Storehouse, or Treasurie for the Diseased, Matthew Blower offers “a present medicine for the hickop”:

Take thy finger ends, and stop both thine ears very hard, and the hickop will surcease immediately.

I found this in Julian Walker’s How to Cure the Plague and Other Curious Remedies (2013), a collection of historical cures for various maladies. He says, “I tried it, and it worked.”

Second Thoughts
Image: Wikimedia Commons

We’re told that we can’t change the past, but what about the case of retroactive pronouncements? On July 23, 2000, Lance Armstrong was declared the winner of the Tour de France — he completed the race with the lowest overall time, and his win was certified by the Union du Cyclisme Internationale. If on Christmas Day 2002 a friend of ours said, “Lance Armstrong won the Tour de France in 2000,” we would feel that this statement was true.

On Oct. 22, 2012, after determining that Armstrong had used banned substances, the UCI withdrew all of his wins at the Tour de France. If on Christmas Day 2012 our friend said, “Lance Armstrong won the Tour de France in 2000,” we’d feel that this statement was false.

“This means that, in moving from Context A to Context B, the past (of the actual world) has changed,” write Luca Barlassina and Fabio Del Prete in the January issue of Analysis. “The year 2000 had a certain property on Christmas 2002, but did not have that property on Christmas 2012 any longer.”

“One should then stop asking whether the past can change and start to inquire on how to make sense of this. We leave this task to a future paper — unless the future changes.”

(Luca Barlassina and Fabio Del Prete, “The Puzzle of the Changing Past,” Analysis, January 2015.)

The Seventh Art Cinema

In the late 1990s, Frenchman Diynn Eadel set out to build an immense open-air movie theater in the desert near Sharm el-Sheikh, at the southern tip of the Sinai Peninsula. He arranged financing in Paris and installed projection equipment, 700 cinema seats, and a generator in the desert.

Unfortunately, the theater was shut down by Egyptian authorities before its planned opening in October 1997. The reasons aren’t clear. It was largely forgotten until Estonian photographer Kaupo Kikkas rediscovered it in 2014.

“Dynn Eadel with Seventh Art attempts to prove that tourism is not necessarily a destructive element and that The Great Theatre of Nature can reconcile us with the elements,” reads an old flyer for the project. “When will be the first Sinai International Film Festival?”

Two in One

Look at this image closely and you’ll see the features of Albert Einstein.

But look at it from across a room and you’ll see Marilyn Monroe.

It’s a “hybrid image,” created using a technique developed by Aude Oliva of MIT and Philippe Schyns of the University of Glasgow. The image combines the low spatial frequencies of one picture with the high spatial frequencies of another, so that it’s processed differently at different viewing distances.

See their paper for the details, and this gallery for more examples.

Podcast Episode 55: The Dyatlov Pass Incident

On February 1, 1959, something terrifying overtook nine student ski-hikers in the northern Ural Mountains. In this episode of the Futility Closet podcast we’ll recount what is known about the incident at Dyatlov Pass and try to make sense of the hikers’ harrowing final night.

We’ll also hear how Dwight Eisenhower might have delivered the Gettysburg Address and puzzle over why signing her name might entitle a woman to a lavish new home.

See full show notes …

Podcast Episode 53: The Lost Colony

It’s been called America’s oldest mystery: A group of 100 English colonists vanished from North Carolina’s Roanoke Island shortly after settling there in 1587. But was their disappearance really so mysterious? In this episode of the Futility Closet podcast we’ll trace the history of the “lost colony” and consider what might have happened to the settlers.

We’ll also visit an early steam locomotive in 1830 and puzzle over why writing a letter might prove to be fatal.

See full show notes …

Podcast Episode 52: Moving Day in New York

For centuries, May 1 brought chaos to New York, as most tenants had to move on the same day, clogging the streets with harried people and all their belongings. In this episode of the Futility Closet podcast we’ll review the colorful history of “Moving Day” and wonder how it lasted through two centuries.

We’ll also recount some surprising escapes from sinking ships and puzzle over a burglar’s ingenuity.

See full show notes …