As the days passed, it became noticeable, in a way that was, at first, imperceptible, that the word blank, as if it had suddenly become obscene or rude, was falling into disuse, that people would employ all kinds of evasions and periphrases to replace it. A blank piece of paper, for example, would be described instead as virgin, a blank on a form that had all its life been a blank became the space provided, blank looks all became vacant instead, students stopped saying that their minds had gone blank, and owned up to the fact that they simply knew nothing about the subject, but the most interesting case of all was the sudden disappearance of the riddle with which, for generations and generations, parents, grandparents, aunts, uncles and neighbors had sought to stimulate the intelligence and deductive powers of children, You can fill me in, draw me and fire me, what am I, and people, reluctant to elicit the word blank from innocent children, justified this by saying that the riddle was far too difficult for those with limited experience of the world. It seemed, therefore, that the high political office promised to the interior minister had been cut short at birth, that he was fated, after having come so close to touching the sun, to be drowned ignominiously in the hellespont, but another idea, as sudden as a lightning flash illuminating the night, made him rise again. All was not lost. He ordered back to base the agents confined to fieldwork, blithely dismissed those on short-term contracts, gave the secret police a thorough dressing-down and set to work.

It was clear that the city was a termites' nest of liars and that the five hundred he had in his power were also lying through all the teeth they had in their head, but there was one difference between these two groups, the former were free to enter and leave their homes, and, elusive and slippery as eels, could appear as easily as they could disappear, only to reappear later on and again vanish, whereas dealing with the latter was the easiest thing in the world, it was enough just to go down into the ministry cellars, all five hundred were not there, of course, there wasn't room, most were distributed around other investigatory units, but the fifty or so kept under permanent observation should be more than enough for an initial attempt. The reliability of the machine may have been called into question by certain sceptical experts and some courts may even have refused to admit as evidence the results obtained from the tests, but the interior minister was nonetheless hopeful that the use of the machine might at least give off a small spark that would help him find his way out of the dark tunnel into which the investigation had stuck its head. His plan, as you will no doubt have guessed, was to bring back into the fray the famous polygraph, also known as the lie detector, or, in more scientific terms, a machine that is used to record, simultaneously, various psychological and physiological functions, or, in more descriptive detail, an instrument for registering physiological phenomena of which an electrical recording is made on a sheet of damp paper impregnated with potassium iodide and starch. Connected to the machine by a tangle of wires, armbands and suction pads, the patient does not suffer, he simply has to tell the truth, the whole truth and nothing but the truth, and to cease to believe in the universal assertion, the old, old story, which, since the beginning of time, has been drummed into us, that the will can do anything, for you need look no further than the following example, which denies it outright, because that wonderful will of yours, however much you may trust it, however tenacious it may have been up until now, cannot control twitching muscles, cannot staunch unwanted sweat or stop eyelids blinking or regulate breathing. In the end, they'll say you lied, you'll deny it, you'll swear you told the truth, the whole truth and nothing but the truth, and that might be true, you didn't lie, you just happen to be a very nervous person, with a strong will, it's true, but you are nevertheless a tremulous reed that shivers in the slightest breeze, so they'll connect you up to the machine again and it will be even worse, they'll ask if you're alive and you'll say, of course I am, but your body will protest, will contradict you, the tremor in your chin will say no, you're dead, and it might be right, perhaps your body knows before you do that they are going to kill you. It would be unlikely that this could happen in the cellars of the ministry of the interior, the only crime these people have committed is to cast a blank vote, and that would have been of no importance if they had merely been the usual suspects, but there were a lot of them, too many, almost everyone, who cares if it's your inalienable right when they tell you it's to be used only in homeopathic doses, drop by drop, you can't come here with a pitcher filled to overflowing with blank votes, that's why the handle dropped off, we always thought there was something suspicious about that handle, if something that could always carry a lot was satisfied with carrying little, that shows a most praiseworthy modesty, what got you into trouble was ambition, you thought you could fly up to the sun and, instead, you fell headfirst into the dardanelles, you will recall that we said the same about the interior minister, but he belongs to a different race of men, the macho, the virile, the bristly-chinned, those who will not bow their head, let's see now how you escape the hunter of lies, let's see what revealing lines your large and small transgressions will leave on that strip of paper impregnated with potassium iodide and starch, and you thought you were something special, this is what the much-vaunted supreme dignity of the human being can be reduced to, a piece of damp paper.

Now the polygraph is not a machine equipped with a disc that goes backward and forward and tells us, depending on the case, He lied, He didn't lie, if that were the case, being a judge with the ability to condemn and absolve would be the easiest thing in the world, police stations would be replaced by departments of applied mechanical psychology, lawyers, for lack of clientele, would pull down the shutters, the courts would be abandoned to the flies until some other use had been found for them. A polygraph, as we were saying, cannot go anywhere without help, it needs to have by its side a trained technician who can interpret the lines on the paper, but this doesn't mean that the technician must be a connoisseur of the truth, all he has to know is what is there before his eyes, that the question asked of the patient under observation has produced what we might innovatively call an allergographic reaction, or in more literary but no less imaginative terms, the outline of a lie. Something, nevertheless, would have been gained. At least it would be possible to proceed to an initial selection, wheat on the one side, tares on the other, and restore to liberty and family life, thereby freeing up the detention centers, those people, finally vindicated, who, without being contradicted by the machine, responded No to the question Did you cast a blank vote. As for the rest, those who had the guilt of electoral transgressions weighing on their conscience, any mental reserves of the Jesuitical kind or spiritual introspection of the zen variety would prove useless to them, for the polygraph, implacable, unfeeling, would immediately sniff out a falsehood, whether they denied casting a blank vote or claimed to have voted for such and such a party. One can, if the circumstances are favorable, survive one lie, but not two. Just in case, the interior minister had given orders that whatever the result of the tests, for now, no one would be released, Leave them be, one never knows how far human malice will go, he said. And he was right, the wretched man. After many dozens of meters of squiggled-on, scribbled-on paper, on which had been recorded the tremors of the souls of everyone observed, after questions and answers repeated hundreds of times, always the same, always identical, one secret service agent, still a young lad, with little experience of temptation, fell with the innocence of a newborn lamb for the challenge thrown out to him by a pretty young woman who had just been submitted to the polygraph test and been declared to be deceitful and false. This mata-hari said, That machine is useless, Useless, why, asked the agent, forgetting that dialogue did not form part of the task with which he had been entrusted, Because in a situation like this, when everyone is under suspicion, all you would have to do is to say the word Blank, nothing more, without even bothering to find out if the person had voted, to provoke negative reactions, turmoil, anxiety, even if the person being examined was the purest, most perfect personification of innocence, Oh, come off it, I don't believe that, retorted the agent confidently, anyone at peace with his conscience would simply tell the truth and pass the polygraph test easily, We're not robots or talking stones, mister agent, said the woman, and within every human truth there is always an element of anxiety or conflict, we are, and I am not referring simply to the fragility of life, we are a small, tremulous flame which threatens at any moment to go out, and we are afraid, above all, we are afraid, You're wrong there, I'm not afraid, I've been trained to overcome fear in all circumstances and, besides, I am not by nature a scaredy-cat, I wasn't even as a child, responded the agent, In that case, why don't we try a little experiment, suggested the woman, you let yourself be connected up to the machine and I'll ask the questions, You're mad, I'm the one with the authority here and, besides, you're the suspect, not me, So you are afraid, No, I'm not, Then connect yourself up to that machine and show me what it means to be a truthful man. The agent looked at the woman, who was smiling, he looked at the technician, who was struggling to conceal a smile, and said, All right, then, once won't hurt, I agree to submit to the experiment. The technician attached the wires, tightened the armbands, adjusted the suction pads, I'm ready when you are. The woman took a deep breath, held the breath in her lungs for three seconds and then, in a rush, uttered one word, Blank. It wasn't a question, more of an exclamation, but the needles moved, leaving a mark on the paper. In the pause that followed, the needles did not stop completely, they continued moving, making tiny traces, like the ripples made by a stone thrown into the water. The woman was looking at the needles, not at the bound man, but when she did turn and look him in the eye, she asked in a gentle, almost tender voice, Tell me, please, did you cast a blank vote, No, I didn't, I never did and never will cast a blank vote, replied the man vehemently. The needles moved rapidly, precipitately, violently. Another pause. Well, asked the agent. The technician took a while to respond, the agent repeated, Well, what does the machine say. The machine says that you lied, sir, said the embarrassed technician, That's impossible, cried the agent, I told the truth, I didn't cast a blank vote, I'm a professional secret service agent, a patriot trying to defend the interests of the nation, there must be something wrong with the machine, Don't waste your energy, don't try to justify yourself, said the woman, I believe you told the truth, that you didn't cast a blank vote and never will, but that, I must remind you, is not the point, I was just trying to demonstrate to you, successfully as it turns out, that we cannot entirely trust our bodies, It's all your fault, you made me nervous, Of course it was my fault, it was the temptress eve's fault, but no one came to ask us if we were feeling nervous when they hooked us up to that contraption, It's guilt that makes you feel nervous, Possibly, but go and ask your boss why it is that you, who are innocent of all our evils, behaved like a guilty man, There's nothing more to be said, replied the agent, it's as if what happened just now never happened at all. Then, addressing the technician, Give me that strip of paper, and remember, say nothing, if you do, you'll regret you were ever born, Yes, sir, don't worry, I'll keep my mouth shut, So will I, said the woman, but at least tell the minister that no amount of cunning will do any good, we will all continue to lie when we tell the truth, and to tell the truth when we lie, just like him, just like you, now just imagine if I had asked if you wanted to go to bed with me, what would you have said then, what would the machine have said.