desert without a compass. Maybe Moses could do it."
"Moses even crossed the sea."
"Ancient history. To my knowledge, at this level, never once has a Semiotec succeeded in securing illegal access."
"You're sayin' a single-conversion trap's sufficient, eh?"
"A double-conversion trap is too risky. It would effectively reduce the possibility of temporary bridging to zero, but at this point it's still a freak stunt. The trapping process isn't solidly grounded. The research isn't complete."
"Who said anything 'bout double-conversion trapping?" said the old man, working another paperclip into his cuticle. The right index finger this time.
"What is it you're saying, then?"
"Shuffling, son. I'm talkin' shuffling. I want you to launder and shuffle. That's why I called on you. If it was simple brainwash laundry, there wouldn't have been any need't'call you."
"I don't get it," I said, recrossing my legs. "How do you know about shuffling? That's classified information. No outsider's supposed to know about it."
"Well, I do. I've got a pretty open pipeline to the top of the System."
"Okay, then run this through your pipeline. Shuffling procedures are completely frozen at this time. Don't ask me why. Obviously some kind of trouble. Whatever the case, shuffling is now prohibited."
The old man handed me the request folder once again.
"Have yourself a good look at the last page. Should be shuffling procedure clearance there somewhere."
I opened the folder to the last page and ran my eyes over the documentation. Sure enough, shuffling clearance authorized. I read it over several times. Official. Five signatures, no less. What the hell could the Brass be thinking? You dig a hole and the next thing they say is fill it in; fill it in and they tell you to dig a hole. They're always screwing with the guy in the field.
"Could I ask you to make color copies of all pages of this request. I might find myself driven into a nasty corner without them."
"Fine," said the old man. "Glad to make you your copies. Nothing to worry 'bout. Everything's on the up and up. I'll give you half your fee today, the other half on final receipt. Fair and square?"
"Fair enough. Now, to get on with the laundry. After I'm done, I'll take the wash home with me and do the shuffling there. Shuffling requires special precautions. I'll be back with the shuffled data when I'm through."
"Noon, four days from now. It can't be any later."
"Plenty of time."
"I beg of you, son, whatever you do, don't be late," the old man pleaded. "If you're late, something terrible will happen."
"World going to fall apart?" I kidded.
"In a way," said the old man, "yes."
"Not this time. I never come in late," I said. "Now, if it's not too much to ask, could I please trouble you for some ice water and a thermos of hot black coffee. And maybe a small snack. Please. Something tells me this is going to be a long job."
Something told me right. It was a long, hard job. The numerics themselves were the proverbial piece of cake, but with so many case-determinant step-functions, the tabulations took much more doing than they first appeared to require. I input the data-as-given into my right brain, then after converting it via a totally unrelated sign-pattern, I transfer it to my left brain, which I then output as completely recoded numbers and type up on paper. This is what is called laundering. Grossly simplified, of course. The conversion code varies with the Calcutec. This code differs entirely from a random number table in its being diagrammatic. In other words, the way in which right brain and left brain are split (which, needless to say, is a convenient fiction; left and right are never actually divided) holds the key. Drawn, it might look something like this: Significantly, the way the jagged edges do not precisely match up means that it is impossible to reconvert data back into its original form. Nonetheless, Semiotecs can occasionally decode stolen data by means of a temporary