[Image at right: artist’s rendering of a four-dimensional hypercube, or tesseract]
Walter Tevis, who died in 1984, was the author of several popular novels made into very successful movies: The Hustler, The Color of Money, and The Man Who Fell to Earth. But he began his career writing straight-up science fiction. Among his earliest stories was “The Ifth of Oofth,” originally published in Galaxy Science Fiction magazine in 1957 and anthologized numerous times thereafter.
In the story, the narrator visits a friend of his named Farnsworth. The latter has constructed a little doohickey of a gizmo which he wants to share, and hands it to the narrator:

Continuing last Friday’s 
And finally, a little music. I’m not going to provide a bunch of links to online information about Ry Cooder — there’s a ton of it out there. I will say that if you don’t know his work, at all, I think you’re in for a treat. The number which follows (not one of his hits, but a performance I’ve always been fond of) is a straight-up instrumental version — a re-visioning — of an Ike & Tina Turner number called “I Think It’s Going to Work Out Fine.” Here’s what Rolling Stone said of the number in 
His time as a boy had passed many years ago. But, he suspected, he would always and forever be The Boy. His mind would ever run like two trains on two parallel tracks at once, one inside his head and the other outside, the trains always synced up, The Boy always and effortlessly stepping back and forth between the two, roaming the cars, visiting the locomotives, sounding the whistles, liking the way the views from the two trains mirrored each other but were never the same. He recognized his voice in each train, though the voice was different.
Then as they talked, The Boy suddenly became aware of flashing red lights on the country road which he could see from the deck. He could hear the rising warble of a siren, the way the tree frogs silenced respectfully the way they always did.
Cynicism is an easy response to life.
My brother the architect once explained to me the key to building things successfully. By building he meant not just framing, erecting walls and roofs and so on, but everything: flooring, painting, pouring foundations, and so on. All of it, he said, had one critical element: edges. How an architect or builder or home handyman handles edges defines his or her success at it. Buildings fall down; patterned wallpaper fails to match up at the seams; bookshelves wobble, and a marble placed on the floor rolls freely from one corner to another.