Руди Рюкер: Inside Out

"I can make you feel like Rex," said Zee through Rex's mouth. "With an Alf. Come back here, honey."

"Meanwhile on planet Earth," said Marjorie, and disappeared down the stairs, shaking her head.

"Stop it, Zee, and let's get to work. Where are we supposed to find that hypertoroidal vortex ring you were talking about?"

"Space's dimensionality depends on the size scale you look at, Rex. From a distance a tree seems like a pattern of one-D lines. Get closer and the bark looks like a warpy two-D surface. Land on the surface and it's a fissured three-D world. Down and down. Hypertoroidal vortex rings are common at the atomic scale. They're called quarks."

"Quarks!"

"A quark is a toroidal loop of superstring. Now just hold still while I reach down and yank—"

There was a sinking feeling in Rex's chest. Zee was moving down through him, descending into the dimensional depths. With her bright "growth tip" gone from him, Rex felt more fully himself than he had since last night. Zee's fractal trail was still in him, but her active self was down somewhere in his atoms. He sighed and sank down into his armchair.

Interesting how receptive Marjorie had been to that suggestion of Zee's… but no. The peace of his neutral isolation was too sweet to compromise. But what was Candy up to right now? What was Alf getting her to do?

Rex's nervous gaze strayed to the shelves of the little novelties that he was ready to mail, once the orders started coming in. He tried to calm himself by thinking about business. Boy's Life might be a good place to advertise, maybe he should write them for their rates. Or—

"Wuugh!" Zee's heavy catch swelled and stung in Rex's rising gorge and he gagged again, harder. A flickering fur sphere flopped out of his mouth and plopped onto the floor in front of him. It had an aura of frenzied activity, but it didn't seem to be going anyplace. It just lay there on the pine boards, its surface flowing this way and that.

"I'm back," murmured Zee with Rex's mouth.

Rex nudged the sphere with his foot. It shrank from his touch.

"If you're rough with it, it shrinks," said Zee. "And if you pat it, it gets bigger. Try."

Rex leaned forward and placed his hands lightly on the sphere's equator. It wasn't exactly fur-covered after all. Velcro was more like it. Zee had him rub his hands back and forth caressingly, and then move them apart. The sphere bulged along with his hands, out and out till it was four feet across. Rex felt like a tailor fitting a fat man for a suit. He pushed back his chair and got up to take a better look at the thing.

At any instant, its surface was fractally rough: cracked and fissured, with cracks in its cracks, and with a tufty overlay of slippery fuzz that branched and rebranched. In its richness of structure, it was a bit like an incredibly detailed scale model of some alien planet.

What made the fuzzball doubly strange was that its surface was in constant flux. If it was like the model of a planet, it was a dynamic model, with speeded-up time. As if to the rhythm of unseen seasons, patches of the fuzzball's stubble would grow dark red, flatten out to eroded yellow badlands, glaze over with blue crackle, and then blossom back into pale red growth.

"A quark is this complex?" Rex asked unbelievingly. "And you say this is really a hypertorus? Where's the inner sphere? And how can anything ever get inside it?"

"It's the hyperflow that makes it impervious," said Zee. "And you valve that down with a twist like this." She made Rex grab the sphere and twist it clockwise about its vertical axis. It turned as grudgingly as a stiff faucet. "If you give it a half-turn, the hyperflow stops." Sure enough, as Zee/Rex's hands rotated the sphere it stopped its flickering. It was static now, with a big red patch near Rex. Frozen still like this, the sphere was filmy and transparent. Peering into it, Rex could see a small sphere in the middle with a green patch matching the outer sphere's red patch.

"You can still make it change size when it's stopped like this," said Zee, urging Rex's reluctant hands forward. "But now, even better, you can push right through it. Even though it still resists shear, it's gone matter-transparent."

The outer sphere was insubstantial as a curtain of water; the central sphere was, too. It had been the hyperflow, now halted, that gave the spheres their seeming solidity. Zee now demonstrated that if Rex jabbed or caressed the barely palpable inner sphere, it grew and shrank just as willingly as did the outer sphere. The two could be adjusted to bound concentric shells of any size.

The region between the spheres felt tingly with leashed energies. Rex could begin to see what would happen if the hyperflow started back up. Everything would turn over. The inside would go out, and the outside would go in. He jerked his hands back.

"And of course you restart it by turning it the other way," said Zee. Rex dug into the sphere's yeilding surface and twisted it counterclockwise. Insubstantial though it was, the sphere resisted this axial rotation as strongly as before. Slowly it gave and unvalved. The hyperflow started back up. The big outer patch near Rex shifted shades from red through orange to yellow to green to blue to violet. Rex watched for a while and then stopped the flow the next time a green outer patch appeared. Peered in. Yes, now the inner patch was red. They'd traded places. The stuff of the outer sphere had flowed up through hyperspace and back down to the inner sphere. It was just the same as the way the stuff of a donut-shape's outer equator can flow up over the donut's top and down to its inner equator. Like a sea cucumber, the big quark lived to even.

"Let's call it a cumberquark," said Rex.

"Fine," said Zee. "Wonderful. I'm glad I showed it to you. Aren't you going to try it out?"

Rex's eye lit on a glass jar of rubber cement. He halted the cumberquark's flow, jabbed the central sphere down to the size of a BB, squeezed the outer sphere down to the size of a small cantaloupe, and then adjusted the temporarily matter-transparent sphere so that the inner one was inside his jar of rubber cement. The outer sphere included the whole jar and a small disk-section of Rex's desktop. With one quick motion, Rex unvalved the cumberquark just enough for the green patch to turn red, twisted the hyperflow back off, and shoved the cumberquark aside to see what it had wrought.

Thud floop. A moundy puddle of rubber cement resting in a crater on his desk. Wedged into the hole was an odd-shaped glass object. Rex picked it up. A jar, it was the rubber cement jar, but with the label inside, and rattling around inside it was—

"That hard little thing is the disk of desk the jar was sitting on."

The jar's lid was on the top, but facing inwards. Rex pushed on its underside and got it untwisted. As he untwisted it, compressed air hissed out: all the air that had been between the jar and the cumber-quark's outer sphere was squeezed in there. The lid clattered into the jar's dry inside. Peeking in, Rex could see that the rubber cement label had mirror-flipped to tnemec rebbur. Check. He jiggled the jar and spilled the shrunken bit of desk out into his hand. Neat. It was a tiny sphere, with a BB-sized craterlet where the cumberquark's inner sphere had nestled. A small gobbet of uneverted rubber cement clung to this dimple.

Quick youthful footsteps ascended the steps to Rex's office. Marjorie, back for today's Round Two.

"I want you to meet Kissycat. Kissycat, this is Rex." Marjorie had a sinewy black cat nestled against her flattish chest. She pressed forward and placed the cat on Rex's shoulder. It dug its claws in. Rex sneezed. He was allergic to cats. He had some trouble getting the neurotic beast off his shoulder and onto the desktop. He had a wonderful, awful, Grinchy idea.