Trouble In TimeTROUBLE IN TIME
"Trouble in Time" was the second story Cyril and I published in collaboration. 
(The first was "Before the Universe.") In most of these early stories I thought 
them up and "action-charted" them; Cyril wrote a complete first draft from my 
plot outline; and I revised them for publication. So the responsibility for 
structure and final form is mostly mine. What Cyril contributed was only the 
hardest port. 
To begin at the beginning everybody knows that scientists are crazy. I may be 
either mistaken or prejudiced, but this seems especially true of 
mathematico-physicists. In a small town like Colchester gossip spreads fast and 
furiously, and one evening the word was passed around that an outstanding 
example of the species Doctissimus Dementiae had finally lodged himself in the 
old frame house beyond the dog-pound on Court Street, mysterious crates and 
things having been unloaded there for weeks previously. 
Abigail O'Liffey, a typical specimen of the low type that a fine girl like me is 
forced to consort with in a small town, said she had seen the Scientist. "He had 
broad shoulders," she said dreamily, "and red hair, and a scraggly little 
moustache that wiggled up and down when he chewed gum." 
"What would you expect it to do?" 
She looked at me dumbly. "He was wearing a kind of garden coat," she said. "It 
was like a painter's, only it was all burned in places instead of having paint 
on it. I'll bet he discovers things like Paul Pasteur." 
"Louis Pasteur," I said. "Do you know his name, by any chance?" 
"Whose – the Scientist's? Clarissa said one of the express-men told her husband 
it was Cramer or something." 
"Never heard of him," I said. "Good night." And I slammed the screen door. 
Cramer, I thought – it was the echo of a name I knew, and a big name at that. I 
was angry with Clarissa for not getting the name more accurately, and with 
Abigail for bothering me about it, and most of all with the Scientist for 
stirring me out of my drowsy existence with remembrances of livelier and 
brighter things not long past. 
So I slung on a coat and sneaked out the back door to get a look at the mystery 
man, or at least his house. I slunk past the dog-pound, and the house sprang 
into sight like a Christmas tree – every socket in the place must have been in 
use, to judge from the flood of light that poured from all windows. There was a 
dark figure on the unkempt lawn; when I was about ten yards from it and on the 
verge of turning back it shouted at me : "Hey, you! Can you give me a hand?" 
I approached warily; the figure was wrestling with a crate four feet high and 
square. "Sure," I said. 
The figure straightened. "Oh, so he's a she," it said. "Sorry, lady. I'll get a 
hand truck from inside." 
"Don't bother," I assured it. "I'm glad to help" And I took one of the canvas 
slings as it took the other, and we carried the crate in, swaying perilously. 
"Set it here, please," he said, dropping his side of the crate. It was a he, I 
saw in the numerous electric bulbs' light, and from all appearances the 
Scientist Cramer, or whatever his name was. 
I looked about the big front parlor, bare of furniture but jammed with boxes and 
piles of machinery. "That was the last piece," he said amiably, noting my gaze. 
"Thank you. Can I offer you a scientist's drink?" 
"Not – ethyl?" I cried rapturously. 
"The same," he assured me, vigorously attacking a crate that tinkled internally. 
"How do you know?" 
"Past experience. My Alma Mater was the Housatonic University, School of 
Chemical Engineering." 
He had torn away the front of the crate, laying bare a neat array of bottles. 
"What's a C.E. doing in this stale little place?" he asked, selecting flasks and 
measures. 
"Sometimes she wonders," I said bitterly. "Mix me an Ethyl Martini, will you?" 
"Sure, if you like them. I don't go much for the fancy swigs myself. Correct me 
if I'm wrong." He took the bottle labeled CH2OH. "Three cubic centimeters?" 
"No – you don't start with the ethyl!" I cried. "Put four minims of fusel oil in 
a beaker." He complied. "Right – now a tenth of a grain of saccharine saturated 
in theine barbiturate ten per cent solution." His hands flew through the 
pharmaceutical ritual. "And now pour in the ethyl slowly, and stir, don't 
shake." 
He held the beaker to the light. "Want some color in that?" he asked, immersing 
it momentarily in liquid air from a double thermos. 
"No," I said. "What are you having?" 
"A simple fusel highball," he said, expertly pouring and chilling a beakerful, 
and brightening it with a drop of a purple dye that transformed the colorless 
drink into a sparkling beverage. We touched beakers and drank deep. 
"That," I said gratefully when I had finished coughing, "is the first real drink 
I've had since graduating three years ago. The stuff has a nostalgic appeal for 
me." 
He looked blank. "It occurs to me," he said, 'that I ought to introduce myself. 
I am Stephen Trainer, late of Mellon, late of Northwestern, late of Cambridge, 
sometime fellow of the Sidney School of Technology. Now you tell me who you are 
and we'll be almost even." 
I collected my senses and announced, "Miss Mabel Evans, late in practically 
every respect." 
"I am pleased to make your acquaintance, Miss Evans," he said. "Won't you sit 
down?" 
"Thank you," I murmured. I was about to settle on one of the big wooden boxes 
when he cried out at me. 
"For God's sake – not there!" 
"And why not?" I asked, moving to another. "Is that your reserve stock of 
organic bases?" 
"No," he said. "That's part of my time machine." 
I looked at him. "Just a nut, huh?" I said pityingly. "Just another sometimes 
capable fellow gone wrong. He thinks he knows what he's doing, and he even had 
me fooled for a time, but the idee fixe has come out at last, and we see the man 
for what he is – mad as a hatter. Nothing but a time-traveller at the bottom of 
that mass of flesh and bone." I felt sorry for him, in a way. 
His face grew as purple as the drink in his hand. As though he too had formed 
the association, he drained it and set it down. "Listen," he said. "I only know 
one style of reasoning that parallels yours in its scope and utter disregard of 
logic. Were you ever so unfortunate as to be associated with that miserable 
charlatan, Dr. George B. Hopper?" 
"My physics professor at Housatonic," I said, "and whaddya make of that?" 
"I am glad of the chance of talking to you," he said in a voice suddenly hoarse. 
"It's no exaggeration to say that for the greater part of my life I've wanted to 
come across a pupil of Professor Hopper. I've sat under him and over him on 
various faculties; we even went to Cambridge together — it disgusted both of us. 
And now at last I have the chance, and now you are going to learn the truth 
about physics." 
"Go on with your lecture," I muttered skeptically. 
He looked at me glassily. "I am going on with my lecture," he said. "Listen 
closely. Take a circle. What is a circle?" 
"You tell me," I said. 
"A circle is a closed arc. A circle is composed of an infinite number of 
straight lines, each with a length of zero, each at an angle infinitesmally 
small to its adjacent straight lines." 
"I should be the last to dispute the point," I said judiciously. He reached for 
the decanter and missed. He reached again grimly, his fist opening and closing, 
and finally snapping shut on its neck. Will you join me once more?" he asked 
graciously. 
"Granted," I said absently, wondering what was going around in my head. 
"Now — one point which we must get quite clear in the beginning is that all 
circles are composed of an in—" 
"You said that already," I interrupted. 
"Did I?" he asked with a delighted smile. "I'm brighter than I thought." He 
waggled his head fuzzily. "Then do you further admit that, by a crude Euclidean 
axiom which I forget at the moment, all circles are equal?" 
"Could be — but so help me, if —" I broke off abruptly as I realized that I was 
lying full length on the floor. I shuddered at the very thought of what my aunt 
would say to that. "The point I was about to make," he continued without a 
quaver, "was that if all circles are equal, all circles can be traversed at the 
same expenditure of effort, money, or what have you." He stopped and gasped at 
me, collecting his thoughts. "All circles can be traversed, also, with the same 
amount of time! No matter whether the circle be the equator or the head of a 
pin! Now do you see?" 
"With the clarity appalling. And the time travelling .. .?" 
"Ah — er — yes. The time travelling. Let me think for a moment." He indicated 
thought by a Homeric configuration of his eyebrows, forehead, cheeks and chin. 
"Do you know," he finally said with a weak laugh, "I'm afraid I've forgotten the 
connection. But my premise is right, isn't it? If it takes the same time to 
traverse any two circles, and one of them is the universe, and the other is my 
time wheel —" His voice died under my baleful stare. 
"I question your premise vaguely," I said. "There's nothing I can exactly put my 
finger on, but I believe it's not quite dry behind the ears." 
"Look," he said. "You can question it as much as you like, but it works. I'll 
show you the gimmicks." 
We clambered to our feet. "There," he pointed to the box I had nearly sat upon, 
"there lies the key to the ages." And he took up a crowbar and jimmied the top 
off the crate. 
I lifted out carefully the most miscellaneous collection of junk ever seen 
outside a museum of modern art. "What, for example," I asked, gingerly dangling 
a canvas affair at arms' length, "does this thing do?" 
"One wears it as a belt," he said. I put the thing on and found that it resolved 
itself into a normal Sam Browne belt with all sorts of oddments of things 
dangling from it. "Now," he said, "I have but to plug this into a wall socket, 
and then, providing you get on the time wheel, out you go like a light — pouf!" 
"Don't be silly," I said. "I'm practically out now in the first place, in the 
second place I don't care whether I go out pouf or splash – though the latter is 
more customary – and in the third place I don't believe your silly old machine 
works anyway. I dare you to make me go pouf – I just dare you!" 
"All right," he said mildly. "Over there is the time wheel. Get on it." 
The time wheel reminded me of a small hand-turned merry-go-round. I got on it 
with a good will, and he made it turn. Then he plugged in the lead to a wall 
socket, and I went out like a light – pouf ! 
There are few things more sobering than time-travel. On going pouf I closed my 
eyes, as was natural. Possibly I screamed a little, too. All I know is when I 
opened my eyes they were bleary and aching, and certainly nowhere very near the 
old house past the dog-pound on Court Street. The locale appeared to be 
something like Rockefeller Center, only without fountains. 
I was standing on polished stones – beautifully polished stones which seemed to 
set the keynote of the surroundings. Everything was beautiful and everything was 
polished. Before me was a tall, tall building. It was a dark night, and there 
seemed to be a great lack of illumination in this World of Tomorrow. 
I followed my nose into the building. The revolving door revolved without much 
complaint, and did me the favor of turning on the lights of the lobby. 
There were no people there; there were no people anywhere in sight. I tried to 
shout, and the ghastly echo from the still darkened sections made me tremble to 
my boots. I didn't try again, but very mousily looked about for an elevator or 
something. The something turned out to be a button in a vast column, labeled in 
plain English, "Slavies' ring." 
I rang, assuring myself that doing so was no confession of inferiority, but 
merely the seizing of an offered opportunity. 
All the lobby lights went out, then, but the column was glowing like 
mother-of-pearl before a candle. A sort of door opened, and I walked through. 
"Why not?" I asked myself grimly. 
I seemed to be standing on a revolving staircase – but one that actually 
revolved! It carried me up like a gigantic corkscrew at a speed that was 
difficult to determine. It stopped after a few minutes, and another door opened. 
I stepped through and said "Thank you" nicely to the goblins of the staircase, 
and shuddered again as the door slammed murderously fast and hard. 
Lights go again at my landing place – I was getting a bit more familiar with 
this ridiculous civilization. Was everybody away at Bermuda for the summer? I 
wondered. Then I chattered my teeth. 
Corpses! Hundreds of them! I had had the bad taste, I decided, to land in the 
necropolis of the World of Tomorrow. 
On slabs of stone they lay in double rows, great lines of them stretching into 
the distance of the huge chamber into which I had blundered. Morbid curiosity 
moved me closer to the nearest stiff. I had taken a course in embalming to get 
my C.E., and I pondered on the advances of that art. 
Something hideously like a bed-lamp clicked on as I bent over the mummified 
creature. Go above! With a rustling like the pages of an ancient book it moved – 
flung its arm over its eyes! 
I'm afraid I may have screamed. But almost immediately I realized that the 
terror had been of my own postulation. Corpses do not move. This thing had moved 
– therefore it was not a corpse, and I had better get hold of myself unless I 
was determined to go batty. 
It was revolting but necessary that I examine the thing. From its fingers thin, 
fine silver wires led into holes in the slab. I rolled it over, not heeding its 
terrible groans, and saw that a larger strand penetrated the neck, apparently in 
contact with its medulla oblongata. Presumably it was sick – this was a 
hospital. I rambled about cheerfully, scanning cryptic dials on the walls, 
wondering what would happen next, if anything. 
There was a chair facing the wall; I turned it around and sat down. 
"Greetings, unknown friend," said an effeminate voice. 
"Greetings right back at you," said I. 
"You have seated yourself in a chair; please be advised that you have set into 
motion a sound track that may be of interest to you." 
The voice came from a panel in the wall that had lit up with opalescent effects.
"My name," said the panel, "is unimportant. You will probably wish to know 
first, assuming that this record is ever played, that there are duplicates 
artfully scattered throughout this city, so that whoever visits us will hear our 
story." 
"Clever, aren't you?" I said sourly. "Suppose you stop fussing around and tell 
me what's going on around here." 
"I am speaking," said the panel, "from the Fifth Century of Bickerstaff." 
"Whatever that means," I said. 
"Or, by primitive reckoning, 2700 A.D." 
"Thanks." 
To explain, we must begin at the beginning. You may know that Bickerstaff was a 
poor Scottish engineer who went and discovered atomic power. I shall pass over 
his early struggles for recognition, merely stating that the process he invented 
was economical and efficient beyond anything similar in history. 
"With the genius of Bickerstaff as a prod, humanity blossomed forth into its 
fullest greatness. Poetry and music, architecture and sculpture, letters and 
graphics became the principal occupations of mankind." 
The panel coughed. "I myself," it said, modestly struggling with pride, "was a 
composer of no little renown in this city. 
"However, there was one thing wrong with the Bickerstaff Power Process. That is, 
as Bickerstaff was to mankind, so the element yttrium was to his process. It was 
what is known as a catalyst, a substance introduced into a reaction for the 
purpose of increasing the speed of the reaction." 
I, a Chemical Engineer, listening to that elementary rot! I didn't walk away. 
Perhaps he was going to say something of importance. 
"In normal reactions the catalyst is not changed either in quantity or in 
quality, since it takes no real part in the process. However, the Bickerstaff 
process subjected all matter involved to extraordinary heat, pressure, and 
bombardment, and so the supply of yttrium has steadily vanished. 
"Possibly we should have earlier heeded the warnings of nature. It may be the 
fault of no one but ourselves that we have allowed our race to become soft and 
degenerate in the long era of plenty. Power, light, heat – for the asking. And 
then we faced twin terrors: shortage of yttrium – and the Martians." 
Abruptly I sat straight. Martians! I didn't see any of them around. 
"Our planetary neighbors," said the panel, "are hardly agreeable. It came as a 
distinct shock to us when their ships landed this year – my year, that is – as 
the bearers of a message. 
"Flatly we were ordered: Get out or be crushed. We could have resisted, we could 
have built war-machines, but what was to power them? Our brain-men did what they 
could, but it was little enough. 
"They warned us, did the Martians. They said that we were worthless, absolutely 
useless, and they deserved the planet more than we. They had been watching our 
planet for many years, they said, and we were unfit to own it. 
"That is almost a quotation of what they said. Not a translation, either, for 
they spoke English and indeed all the languages of Earth perfectly. They had 
observed us so minutely as to learn our tongues! 
"Opinion was divided as to the course that lay before us. There were those who 
claimed that by hoarding the minute quantity of yttrium remaining to us we might 
be able to hold off the invaders when they should come. But while we were 
discussing the idea the supply was all consumed. 
"Some declared themselves for absorption with the Martian race on its arrival. 
Simple laws of biogenetics demonstrated effectively that such a procedure was 
likewise impossible. 
"A very large group decided to wage guerilla warfare, studying the technique 
from Clausewitz's "Theory and Practise". Unfortunately, the sole remaining copy 
of this work crumbled into dust when it was removed from its vault. 
"And then ... 
"A man named Selig Vissarion, a poet of Odessa, turned his faculties to the 
problem, and evolved a device to remove the agonies of waiting. Three months ago 
– my time, remember –he proclaimed it to all mankind. 
"His device was – the Biosomniac. It so operates that the sleeper – the subject 
of the device, that is – is thrown into a deep slumber characterized by dreams 
of a pleasurable nature. And the slumber is one from which he will never, 
without outside interference, awake. 
"The entire human race, as I speak, is now under the influence of the machine. 
All but me, and I am left only because there is no one to put me under. When I 
have done here – I shall shoot myself. 
"For this is our tragedy: Now, when all our yttrium is gone, we have found a 
device to transmute metals. Now we could make all the yttrium we need, except 
that ... 
"The device cannot be powered except by the destruction of the atom. 
"And, having no yttrium at all left, we can produce no such power ... 
"And so, unknown friend, farewell. You have heard our history. Remember it, and 
take warning. Be warned of sloth, beware of greed. Farewell, my unknown friend." 

And, with that little sermon, the shifting glow of the panel died and I sat 
bespelled. It was all a puzzle to me. If the Martians were coming, why hadn't 
they arrived? Or had they? At least I saw none about me. 
I looked at the mummified figures that stretched in great rows the length of the 
chamber. These, then, were neither dead nor ill, but sleeping. Sleeping against 
the coming of the Martians. I thought. My chronology was fearfully confused. 
Could it be that the invaders from the red planet had not yet come, and that I 
was only a year or two after the human race had plunged itself into sleep? That 
must be it. 
And all for the want of a little bit of yttrium! 
Absently I inspected the appendages of the time travelling belt. They were, for 
the most part, compact boxes labeled with the curt terminology of engineering. 
"Converter," said one. "Entropy gradient," said another. And a third bore the 
cryptic word, "Gadenolite." That baffled my chemical knowledge. Vaguely I 
remembered something I had done back in Housatonic with the stuff. It was a 
Scandinavian rare earth, as I remember, containing tratia, eunobia, and several 
oxides. And one of them, I slowly remembered…
Then I said it aloud, with dignity and precision "One of the compounds present 
in this earth in large proportions is yttrium dioxide." 
Yttrium dioxide? Why, that was — 
Yttrium! 
It was one of those things that was just too good to be true. Yttrium! Assuming 
that the Martians hadn't come yet, and that there really was a decent amount of 
the metal in the little box on my belt ... 
Quite the little heroine, I, I thought cheerfully, and strode to the nearest 
sleeper. "Excuse me," I said. 
He groaned as the little reading-lamp flashed on. "Excuse me," I said again. 
He didn't move. Stern measures seemed to be called for. I shouted in his ear, 
Wake up, you!" But he wouldn't. I wandered among the sleepers, trying to arouse 
some, and failing in every case. It must be those little wires, I thought gaily 
as I bent over one of them. 
I inspected the hand of the creature, and noted that the silvery filaments 
trailing from the fingers did not seem to be imbedded very deeply in the flesh. 
Taking a deep breath I twisted one of the wires between forefinger and thumb, 
and broke it with ease. 
The creature groaned again, and – opened its eyes. "Good morning," I said 
feebly. 
It didn't answer me, but sat up and stared from terribly sunken pits for a full 
second. It uttered a little wailing cry. The eyes closed again, and the creature 
rolled from its slab, falling heavily to the floor. I felt for the pulse; there 
was none. Beyond doubt this sleeper slept no longer – I had killed him. 
I walked away from the spot, realizing that my problem was not as simple as it 
might have been. A faint glow lit up the hall, and the lights above flashed out. 
The new radiance came through the walls of the building. 
It must be morning, I thought. I had had a hard night, and a strange one. I 
pressed the "Slavies' ring" again, and took the revolving staircase down to the 
lobby. 
The thing to do now was to find some way of awakening the sleepers without 
killing them. That meant study. Study meant books, books meant library. I walked 
out into the polished stone plaza and looked for libraries. 
There was some fruitless wandering about and stumbling into several structures 
precisely similar to the one I had visited; finally down the vista of a broad, 
gleaming street I saw the deep-carven words, "Stape Books Place," on the 
pediment of a traditionally squat, classic building. I set off for it, and 
arrived too winded by the brisk walk to do anything more than throw myself into 
a chair. 
A panel in the wall lit up and an effeminate voice began, "Greetings, unknown 
friend. You have seated yourself in a chair; please be advised —" 
"Go to hell," I said shortly, rose, and left the panel to go through a door 
inscribed "Books of the Day." 
It turned out to be a conventional reading room whose farther end was a maze of 
stacks and shelves. Light poured in through large windows, and I felt homesick 
for old Housatonic. If the place had been a little more dusty I'd never have 
known it from the Main Tech Library. 
A volume I chose at random proved to be a work on anthropology : "A General 
Introduction to the Study of Decapilation Among the Tertiates of Gondwana as 
Contrasted with the Primates of Eurasia." I found one photograph – in color – of 
a hairless monkey, shuddered, and restored the volume. 
The next book was 'the Exagmination into the incamination for the resons of his 
Works in pregress," which also left me stranded. It appeared to be a critique of 
the middle work of one James Joyce, reprinted from the original edition of 
Paris, 1934 A.D. 
I chucked the thing into a corner and rummaged among the piles of pamphlets that 
jammed a dozen shelves. "Rittenhouse's Necrology" – no. 'statistical Isolates 
Relating to Isolate Statisticals" – likewise no. "The Cognocrat Manifest" – I 
opened it and found it a description of a super-state which had yet to be 
created. "Construction and operation of the Biosomniac" – that was it! 
I seated myself at one of the polished tables and read through the slim pamphlet 
rapidly once, then tore out some of its blank pages to take notes on. The 
arrangement of the regulating dials is optional," I copied on to the paper 
scraps, and sketched the intricate system of Bowden wires that connected the 
bodies with the controls. That was as much of a clue as I could get from the 
little volume, but it indicated in its appendix more exhaustive works. I looked 
up Tissarion," the first on the list. 
"Monarch! may many moiling mockers make my master more malicious marry mate —" 
it said. Mankind, artist to the last, had yet found time to compose an epic poem 
on the inventor of the Biosomniac. I flung the sappy thing away and took down 
the next work on the list, "Chemistry of the Somniac." It was a sound treatise 
on the minute yet perceptible functionings of the subject under the influence of 
the Vissarion device. More notes and diagrams, collated with the information 
from the other book. 
The vitality of the sleeper is most profoundly affected by the operations of the 
Alphate dial ... It is believed that the Somniac may be awakened by a suitable 
manipulation of the ego-flow so calculated as to stock the sleeper to survive a 
severing of the quasi-amniotic wiring system." 
I rose and tucked the notes into my belt. That was enough for me! I'd have to 
experiment, and most likely make a few mistakes, but in a few hours men would be 
awake to grow hard and strong again after their long sleep, to pluck out their 
wires themselves, and to take my yttrium and with it build the needed 
war-machines against the Martians. No more sleep for Earth! And perhaps a new 
flowering of life when the crisis of the invaders was past? 
"The compleat heroine – quite!" I chortled aloud as I passed through the door. I 
glanced at the glowing panel, but it glowed no longer – the unknown speaker had 
said his piece and was done. Onward and outward to save the world, I thought. 
"Excuse me," said a voice. 
I spun around and saw a fishy individual staring at me through what seemed to be 
a small window. 
"What are you doing awake?" I asked excitedly. 
He laughed softly. "That, my dear young lady, is just what I was about to ask 
you." 
"Come out from behind that window," I said nervously. "I can hardly see you." 
"Don't be silly," he said sharply. "I'm quite a few million miles away. I'm on 
Mars. In fact, I'm a Martian." 
I looked closer. He did seem sort of peculiar, but hardly the bogey-man that his 
race had been cracked up to be. "Then you will please tell me what you want," I 
said. "I'm a busy woman with little time to waste on Martians." Brave words. I 
knew it would take him a while to get from Mars to where I was; by that time I 
would have everyone awake and stinging. 
"Oh," he said casually. "I just thought you might like a little chat. I suppose 
you're a time-traveller." 
"Just that." 
"I thought so. You're the fourth – no, the fifth – this week. Funny how they 
always seem to hit on this year. My name is Alfred, John Alfred." 
"How do you do?" I said politely. "And I'm Mabel Evans of Colchester, Vermont. 
Year, 1940. But why have you got a name like an Earthman?" 
"We all have," he answered. "We copied it from you Terrestrials. It's your major 
contribution to our culture." 
"I suppose so," I said bitterly. "Those jellyfish didn't have much to offer 
anybody except poetry and bad sculpture. I hardly know why I'm reviving them and 
giving them the yttrium to fight you blokes off." 
He looked bored, as nearly as I could see. "Oh, have you some yttrium?" 
"Yes." 
"Much?" 
"Enough for a start. Besides, I expect them to pick up and acquire some 
independence once they get through their brush-up with Mars. By the way – when 
will you invade?" 
"We plan to colonize," he said, delicately emphasizing the word, "beginning 
about two years from now. It will take that long to get everything in shape to 
move." 
"That's fine," I said enthusiastically. "We should have plenty of time to get 
ready, I think. What kind of weapons do you use? Death-rays?" 
"Of course," said the Martian. "And heat rays, and molecular collapse rays, and 
disintegrator rays, and resistance rays – you just call it and we have it in 
stock, lady. 
He was a little boastful. "Well," I said, "you just wait until we get a few 
factories going – then you'll see what high-speed, high-grade production can be. 
We'll have everything you've got – double." 
"All this, of course," he said with a smug smile, "after you wake the sleepers 
and give them your yttrium?" 
"Of course. Why shouldn't it be?" 
"Oh, I was just asking. But I have an idea that you've made a fundamental 
error." 
"Error my neck," I said. "What do you mean?" 
"Listen closely, please," he said. "Your machine – that is, your time-traveller 
– operates on the principle of similar circles, does it not?" 
"I seem to remember that it does. So what?" 
"So this, Miss Evans. You postulate that firstly the circumference of all 
circles equals infinity times zero. Am I right?" 
That was approximately what Stephen had said, so I supposed that he was. "Right 
as rarebits," I said. 
"Now, your further hypothesis is probably that all circles are equal. And that 
equal distances traversed at equal speeds are traversed in equal times. Am I 
still right?" 
"That seemed to be the idea." 
"Very well." A smug smile broke over his fishy face. He continued. "Your theory 
works beautifully – but your machine – no." 
I looked down at myself to see if I were there. I was. "Explain that, please," I 
said. "Why doesn't the machine work?" 
"For this reason. Infinity times zero does not equal a nurnber. It equals any 
number. A definite number is represented by x; any number, n. See the 
difference? And so unequal circles are still unequal, and cannot be 
circumnavigated as of the same distance at the same speed in the same time. And 
your theory – is a fallacy." 
He looked at me gloatingly before continuing. Then, slowly, "Your theory is 
fallacious. Ergo, your machine doesn't work. If your machine doesn't work, you 
couldn't have used it to get here. There is no other way for you to have gotten 
here. Therefore ... you are not here! and so the projected colonization will 
proceed on schedule!" 
And the light flashed in my head. Of course! that was what I had been trying to 
think of back in the house. The weakness in Trainer's logic!
Then I went pouf again, my eyes closed, and I thought to myself, "Since the 
machine didn't work and couldn't have worked, I didn't travel in time. So I must 
be back with Trainer." 
I opened my eyes. I was. 
"You moron," I snapped at him as he stood goggle-eyed, his hand on the 
wall-socket. "Your machine doesn't work!" He stared at me blankly. "You were 
gone. Where were you?" 
"It seemed to be 2700 A.D.," I answered. 
"How was it?" he inquired, reaching for a fresh flask of ethyl. 
"Very, very silly. I'm glad the machine didn't work." He offered me .a beaker 
and I drained it. "I'd hate to think that I'd really been there." I took off the 
belt and stretched my aching muscles. 
"Do you know, Mabel," he said, looking at me hard, "I think I'm going to like 
this town."