In the 1969 Night Gallery episode “Eyes,” Joan Crawford plays Claudia Menlo, a ruthless dowager who blackmails a doctor into performing a nerve transplant that will grant her vision for 11 hours. Afterward, alone in her apartment, she impatiently removes the bandages prematurely. She catches a glimpse of a crystal chandelier and then everything goes black. She rampages through her suite and collapses in tears, unaware that the city has suffered a power outage. At dawn, through dimming vision, she sees the rising sun, rushes to grasp it, and crashes through a window to her death.

Now: “How many things did Claudia Menlo see?” asks Dartmouth philosopher Roy Sorensen. “Most people say she saw only the chandelier and the sun (and possibly the pavement on the way down). But I say Claudia saw something in between seeing the crystal chandelier and the rising sun: the darkness of her blacked-out apartment. Claudia had never seen darkness before and mistook this visual experience for an absence of visual experience.”

Can we see darkness? Sorensen pictures a cave explorer in a completely dark cave. If the explorer is asleep and dreaming that he is in a completely dark cave, he does not see the darkness — but when he wakes up, he does. If the explorer then stands too quickly and the blood rushes from his head, he sees stars against an accurately perceived black background — the surrounding darkness. In contrast, his blind companion can’t tell whether the cave is dark; “only the sighted man can tell whether the cave is dark just by looking.”

This raises a puzzle: Suppose you’re in a light-tight container that’s suspended within a larger light-tight container. If the interior of the larger container is illuminated, then of course the darkness you see is the darkness of the smaller container. But what happens if the illumination of the larger space is turned off? You certainly can’t see beyond the walls of the small container in any circumstances. And only the larger container is blocking light. Does it follow that you’re seeing the darkness of the large container within the small container?

(Roy Sorensen, “We See in the Dark,” Noûs 38:3 [2004], 456-480.)

A short animation by Goo-Shun Wang.

Between Grana and Casorzo, Italy, grows a cherry tree atop a mulberry tree.

It’s not uncommon for a small tree to grow on a larger one, but it’s rare for them to reach such a large size. The cherry even flowers in the spring.

The pair are known as the Bialbero de Casorzo, or “double tree of Casorzo.”

New Yorker Kam Brock was sedated and placed in a mental hospital last September because police thought she might be delusional — for one thing, she insisted that Barack Obama was one of her Twitter followers. The hospital set this as an objective for her release: “Patient will verbalize the importance of education for employment and will state that Obama is not following her on Twitter.”

It turns out that @BarackObama does follow Brock on Twitter — but the account doesn’t belong to the president; it was leased to a nonprofit by his campaign.

In 1980, 25-year-old Alfred Lawrence Patterson was admitted to Michigan’s Northville Regional Psychiatric Hospital. He said that the Secret Service and Sen. Edward Kennedy had conspired to place him there.

In fact Patterson had been interviewed by the Secret Service after he’d sent a threatening letter to Kennedy; they concluded that he needed psychiatric care. (Impressively, Patterson won that year’s House primary from within the hospital, drawing 50 percent of the vote.)

When Martha Mitchell, the wife of Nixon attorney general John Mitchell, began to claim that the White House was engaged in illegal activities, she was rumored to be mentally ill. But events proved her right. Nixon later told David Frost, “If it hadn’t been for Martha Mitchell, there’d have been no Watergate.”

Psychologists remember this as the “Martha Mitchell effect” — when a client insists that she’s being chased by the mob, or that the police have been spying on her, she’s not necessarily delusional. In the words of psychotherapist Joseph Berke, “even paranoids have enemies.”

(Thanks, Jason.)

The nonexistence of horrific creatures is, so to speak, not only a fact, but it would also appear to be a fact that is readily available to and acknowledged by the consumers of horrific fictions. However, audiences do appear to be frightened by horror fictions; indeed, they would seem to seek out such fictions, at least in part, either in order to be frightened by them or with the knowledge and assent that they are likely to be frightened by them. But how can one be frightened by what one knows does not exist?

— Noël Carroll, The Philosophy of Horror, 1990

The U.S. 2nd Marine Division picked up an unlikely member in 1943: Siwash the duck, won in a New Zealand raffle, spent 18 months as the mascot of the 1st Battalion, 10th Marines. He took part in three major engagements: Tarawa, Saipan, and Tinian, even winning a combat citation for duckly valor:

For courageous action and wounds received on Tarawa, in the Gilbert Islands, November 1943. With utter disregard for his own personal safety, Siwash, upon reaching the beach, without hesitation engaged the enemy in fierce combat, namely, one rooster of Japanese ancestry, and though wounded on the head by repeated pecks, he soon routed the opposition. He refused medical aid until all wounded members of his section had been care of.

“Siwash holds the rank of sergeant and has a thirst for beer,” reported the Associated Press the following year. “The duck nearly lost its tail feathers on a pier at Tarawa, but since then it learned to jump in a foxhole the minute the marines leaped.”

When his division arrived in Chicago in October 1944, a luncheon party was held in Siwash’s honor, and he gave two radio broadcasts. After the war he helped in recruiting for the Korean War before retiring to the Lincoln Park Zoo, where he died in 1954, 11 years after signing up, modest to the end.

Ulysses, Kansas, moved. Founded in 1885, the town thrived at first, but after four years a drought arrived, and by 1906 the population had dwindled from 1500 to 100. Worse, during the boom years the town had sold thousands of dollars’ worth of bonds to finance improvements that were never made. When East Coast bondholders began to sue, the city fathers were forced to raise the taxes of the remaining residents in order to meet the judgments.

After a year of this, in February 1909, the people of Ulysses decided as a body to give up and start over. They cut their builings into sections, moved them two miles west on horse-drawn sledges, and established “New Ulysses.” The lots on the old site were deeded back to the bondholders, and the new town became the county seat in June.

The Hotel Edwards, above, is the only remaining business building from “Old Ulysses.” It rests today on the grounds of the Grant County Museum.