Grodman was ushered into the conscientious Minister's study. The doughty chief of the agitation was, perhaps, the one man who could not be denied. As he entered, the Home Secretary's face seemed lit up with relief. At a sign from his master, the amanuensis who had brought in the last telegram took it back with him into the outer room where he worked. Needless to say not a tithe of the Minister's correspondence ever came under his own eyes.
'You have a valid reason for troubling me, I suppose, Mr. Grodman?' said the Home Secretary, almost cheerfully. 'Of course it is about Mortlake?'
'It is; and I have the best of all reasons.'
'Take a seat. Proceed.'
'Pray do not consider me impertinent, but have you ever given any attention to the science of evidence?'
'How do you mean?' asked the Home Secretary, rather puzzled, adding, with a melancholy smile, 'I have had to lately. Of course, I've never been a criminal lawyer, like some of my predecessors. But I should hardly speak of it as a science; I look upon it as a question of common-sense.'
'Pardon me, sir. It is the most subtle and difficult of all the sciences. It is, indeed, rather the science of the sciences. What is the whole of Inductive Logic, as laid down, say, by Bacon and Mill, but an attempt to appraise the value of evidence, the said evidence being the trails left by the Creator, so to speak? The Creator has-I say it in all reverence-drawn a myriad red herrings across the track, but the true scientist refuses to be baffled by superficial appearances in detecting the secrets of Nature. The vulgar herd catches at the gross apparent fact, but the man of insight knows that what lies on the surface does lie.'
'Very interesting, Mr. Grodman, but really--'
'Bear with me, sir. The science of evidence being thus so extremely subtle, and demanding the most acute and trained observation of facts, the most comprehensive understanding of human psychology, is naturally given over to professors who have not the remotest idea that 'things are not what they seem,' and that everything is other than it appears; to professors, most of whom, by their year-long devotion to the shop-counter or the desk, have acquired an intimate acquaintance with all the infinite shades and complexities of things and human nature. When twelve of these professors are put in a box, it is called a jury. When one of these professors is put in a box by himself, he is called a witness. The retailing of evidence-the observation of the facts-is given over to people who go through their lives without eyes; the appreciation of evidence-the judging of these facts-is surrendered to people who may possibly be adepts in weighing out pounds of sugar. Apart from their sheer inability to fulfill either function-to observe, or to judge-their observation and their judgment alike are vitiated by all sorts of irrelevant prejudices.'
'You are attacking trial by jury.'
'Not necessarily. I am prepared to accept that scientifically, on the ground that, as there are, as a rule, only two alternatives, the balance of probability is slightly in favor of the true decision being come to. Then, in cases where experts like myself have got up the evidence, the jury can be made to see through trained eyes.'
The Home Secretary tapped impatiently with his foot.
'I can't listen to abstract theorizing,' he said. 'Have you any fresh concrete evidence?'
'Sir, everything depends on our getting down to the root of the matter. What percentage of average evidence should you think is thorough, plain, simple, unvarnished fact, 'the truth, the whole truth, and nothing but the truth'?'
'Fifty?' said the Minister, humoring him a little.
'Not five. I say nothing of lapses of memory, of inborn defects of observational power-though the suspiciously precise recollection of dates and events possessed by ordinary witnesses in important trials taking place years after the occurrences involved, is one of the most amazing things in the curiosities of modern jurisprudence. I defy you, sir, to tell me what you had for dinner last Monday, or what exactly you were saying and doing at five o'clock last Tuesday afternoon. Nobody whose life does not run in mechanical grooves can do anything of the sort; unless, of course, the facts have been very impressive. But this by the way. The great obstacle to veracious observation is the element of prepossession in all vision. Has it ever struck you, sir, that we never see anyone more than once, if that? The first time we meet a man we may possibly see him as he is; the second time our vision is colored and modified by the memory of the first. Do our friends appear to us as they appear to strangers? Do our rooms, our furniture, our pipes strike our eye as they would strike the eye of an outsider, looking on them for the first time? Can a mother see her babe's ugliness, or a lover his mistress' shortcomings, though they stare everybody else in the face? Can we see ourselves as others see us? No; habit, prepossession changes all. The mind is a large factor of every so-called external fact. The eye sees, sometimes, what it wishes to see, more often what it expects to see. You follow me, sir?'
The Home Secretary nodded his head less impatiently. He was beginning to be interested. The hubbub from without broke faintly upon their ears.
'To give you a definite example. Mr. Wimp says that when I burst open the door of Mr. Constant's room on the morning of December 4th, and saw that the staple of the bolt had been wrested by the pin from the lintel, I jumped at once to the conclusion that I had broken the bolt. Now I admit that this was so, only in things like this you do not seem to conclude, you jump so fast that you see, or seem to. On the other hand, when you see a standing ring of fire produced by whirling a burning stick, you do not believe in its continuous existence. It is the same when witnessing a legerdemain performance. Seeing is not always believing, despite the proverb; but believing is often seeing. It is not to the point that in that little matter of the door Wimp was as hopelessly and incurably wrong as he has been in everything all along. Though the door was securely bolted, I confess that I should have seen that I had broken the bolt in forcing the door, even if it had been broken beforehand. Never once since December 4th did this possibility occur to me, till Wimp with perverted ingenuity suggested it. If this is the case with a trained observer, one moreover fully conscious of this ineradicable tendency of the human mind, how must it be with an untrained observer?'
'Come to the point, come to the point,' said the Home Secretary, putting out his hand as if it itched to touch the bell on the writing-table.
'Such as,' went on Grodman imperturbably, 'such as-Mrs. Drabdump. That worthy person is unable, by repeated violent knocking, to arouse her lodger who yet desires to be aroused; she becomes alarmed, she rushes across to get my assistance; I burst open the door-what do you think the good lady expected to see?'
'Mr. Constant murdered, I suppose,' murmured the Home Secretary, wonderingly.
'Exactly. And so she saw it. And what should you think was the condition of Arthur Constant when the door yielded to my violent exertions and flew open?'
'Why, was he not dead?' gasped the Home Secretary, his heart fluttering violently.
'Dead? A young, healthy fellow like that! When the door flew open Arthur Constant was sleeping the sleep of the just. It was a deep, a very deep sleep, of course, else the blows at his door would long since have awakened him. But all the while Mrs. Drabdump's fancy was picturing her lodger cold and stark the poor young fellow was lying in bed in a nice warm sleep.'
'You mean to say you found Arthur Constant alive?'
'As you were last night.'
The minister was silent, striving confusedly to take in the situation. Outside the crowd was cheering again. It was probably to pass the time.
'Then, when was he murdered?'
'Immediately afterward.'
'By whom?'
'Well, that is, if you will pardon me, not a very intelligent question. Science and common-sense are in accord for once. Try the method of exhaustion. It must have been either by Mrs. Drabdump or by myself.'
'You mean to say that Mrs. Drabdump--!'
'Poor dear Mrs. Drabdump, you don't deserve this of your Home Secretary! The idea of that good lady!'
'It was you!'
'Calm yourself, my dear Home Secretary. There is nothing to be alarmed at. It was a solitary experiment, and I intend it to remain so.' The noise without grew louder. 'Three cheers for Grodman! Hip, hip, hip, hooray,' fell faintly on their ears.
But the Minister, pallid and deeply moved, touched the bell. The Home Secretary's home secretary appeared. He looked at the great man's agitated face with suppressed surprise.
