“All right,” Arhu said. “Group one is for phase relationships.” He plucked that control string out as he named it, held it hooked behind one claw, and a series of strings in the matrix ran bright golden as he activated them. Two is for the main hyperstring “junction weave” to four-dimensional space, and the “emphatic” forces: three is for the fifth-dimensional interweave, four is for dimensions six through ten and the lower electromagnetic spectrum, five is for the upper electromagnetic and the strong- and weak-force plena. And then—” He paused, licked his nose.

“Then comes motion,” Urruah said, “—field nutation, sideslip, tesseral, cistemporal, cishyperspatial.” He paused as Arhu leaned in to bite the strings that he was having trouble managing with his paws, “—and then the five strictly physical fields of motion. The planet rotates, it’s inclined on its axis and precesses, it’s also describing a large ellipse around the Sun, and the Sun is moving on the inward leg of a hyperbola with the galactic core at one focus, and the Galaxy—”

“—is rotating, yes, I think we would have heard if it had stopped—”

Urruah made a face. “Just be glad that’s all the kinetics you have to worry about at the moment. Once we get up into second-order stuff, your head will hurt a lot worse than if I’d hit you for your rude mouth, which may come later. And don’t think I can’t hear you thinking, with your teeth and claws full of hyperstrings: you think the laws of science are broken, or I’m deaf? Thought runs down those things like water: that’s partly what they’re built for … All you have to worry about now is the path this piece of Earth is describing through space at the moment, and the path that the piece you’re trying to gate to is describing. You keep them in synch while the gate’s open, and that’ll be more than a lot of wizards can do. It’s a complex helical locus in motion, but no more complex than a trained Person can handle. Let’s see how you do.”