Brave New Worlds

immediate danger to the swimmer, but the Threat is plain to see.
    There's a label fixed to the wall beneath the painting, black lettering stark against all that white, so she knows it's titled "The Pearl Diver. " No such painting has ever hung at MoMA; she's inquired more than once. She's also searched online databases and library hardcopies, but has found no evidence that the painting is anything but a fabrication of her dreaming mind. She's never mentioned it to her therapist, or to anyone else, for that matter.
    In her dream, one of the children (never precisely the same child twice) asks one of the edu-mechs what the woman in the painting is doing, and the droid answers patiently, first explaining what pearls are, in case some of its students might not know.
    "A natural pearl," the mech says, "forms by secretions from the epithelial cells in the mantle of some mollusks, such as oysters, deposited in successive layers about an irritating foreign object, often a parasitic organism. Layers of aragonite or calcite, the crystalline forms of calcium carbonate, accumulate. . . "
    But the eight-year-old Farasha is always more interested in the painting itself, the brushstroke movement and color of the painting, than in the mere facts behind its subject matter, and she concentrates on the canvas while the mech talks. She tunes it out, and the other children, too, and the walls of the museum, and the marble floor beneath her feet.
    She tastes the impossibly clean saltwater getting into her mouth, and her oxygen-starved lungs ache for air. Beneath her, the shark moves silently forward, a silver-blue-gray ghost propelled by the powerful side-to-side sweeps of its tall, heterocercal tail. It knows things that she can only guess, things that she will never see, even in dreams.
    Eventually, the droid finishes with all the twists and turns of its encyclopedia reply and ushers the other children towards the next painting in the gallery. But Farasha is left behind, unnoticed, forgotten, abandoned because she can no longer separate herself from "The Pearl Diver. " Her face and hands are stained with paint, and she's still rising, struggling for the glistening surface that seems to be getting father away instead of nearer. She wonders if people can drown in paintings and kicks her legs again, going nowhere at all.
    The shark's dull eyes roll back like the eyes of something dead or dying, and its jaws gape open wide to reveal the abyss waiting for her past the rows and rows of ragged teeth. Eternity in there, all the eternity she might ever have
    imagined or feared.
    And the canvas pulls her in.
    And sometimes she wakes up, and sometimes she drifts down through frost and darkness filled with anxious, whispering voices, and sometimes the dream architecture collapses and becomes another dream entirely.
    There's a small plastic box on Farasha's bedroom dressing table, polyethylene terephthalate molded and colored to look like carved ivory, and inside are three perfect antique pearls from a broken strand that once belonged to one of her Arab great-grandmothers. Her mother gave her the pearls as a birthday present many years ago, and she's been told that they're worth a lot of money. The oyster species that produced them has been extinct for almost a hundred years. Sometimes, she goes to the dressing table after the dream and opens the plastic box, takes out one or two or all three of the pearls and carries them back to bed with her. In her sweating, sleepless palms, they feel very heavy, as good as stone or lead, and she can't imagine how anyone could have ever worn an entire necklace of them strung about her neck.
    On those mornings after "The Pearl Diver," when it's finally six thirty-five, and the pillow has begun to bleat at her, Farasha gets up and returns the heirloom pearls to their box, which they share with the few inexpensive, unremarkable pieces of jewelry that she owns. She never takes the pearls out any other time, and she tries not to think about them. She would gladly forget them, would sell them off for whatever she could get, if the dream would stop.

    And after Tuesday, there is Wednesday and then Thursday and Friday, each inevitable in its turn and each distinguishable from the other only by its own specific monotony. Farasha works Saturday, because her department fell behind last month by twelve and three quarters over the previous month and because she has nothing else to do. She dreads her days off and avoids them