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Jeg kan ærlig talt ikke huske om det er Borden der sender Angier i retning af Tesla i bogen, men jeg skal se om jeg kan overskue at slå det op.
Her er i hvert fald lidt fra bogen om Bordens anstrengelser for at skjule at de er tvillinger.

Fra Angiers dagbog - 3. september 1902. Uddrag fra samtale med Arthur Koenig, en ung journalist fra Evening Star.
"[...]
'I come to apologize in the matter of Mr Borden, your rival. I confess that all my elaborate theories about him were in error, while your thory, blunt and simple, was correct.'
'I don't follow you,' I said.
'When I came to see you before, you will recall I held some hifalutin theory of Mr. Borden performing a greater magic than any that existed before.'
'I remember,' I said. 'You wisely convinced med of it. I was grateful to you --'
'You, however, had a plainer explanation. Borden is not one man but two, you said. Twins, you said. Identical twin brothers, each taking the place of the other as required.'
'But you proved--'
'You were right, sir! Mr Borden's act is indeed based on twins. Alfred Borden is a name conflated from two: Albert and Frederick, twin brothers, who perform together as one.'
'That's not true!' I said.
'But it was your own theory.'
'In lieu of any other,' I explained. 'You swiftly disabused me. You had evidence--'
'Much of which turned out to have been circumstantial, the rest of which had been falsified. I was a young reporter, not the fully practised in my profession. I have since learnt to check facts, to double-check them, then to check them once more.'
'But I went into the matter myself,' I said. 'I examined the hospital records of his birth, the register of the school he attended--'
'Falsified long since, Mr Angier.' He looked at me questioningly, as if to be sure he was addressing me correctly. I nodded, and he went on, 'The Bordens have built their lives around sustaining this illusion. Nothing about them can be trusted.'
'I investigated most carefully,' I insisted. 'I knew there were two brothers whit those names, but one is two years older than the other!'
'Both coincidentally born in May, as I recall. It does not take much forgery to change a birth record from 8th May 1856 to 18th May 1868.'
'There were a photograph of the two brothers, taken together!'
'Yes, and one so easy to find! It must have been left as a red herring for such as you and I to stumble across. As we duly did,'
'But the two brothers were clearly unalike. I saw the portrait myself!'
'And so did I. Indeed, I have a copy of it in my office. The distinction between their facial characteristics is remarkable. But surely you of all people understand the deceptive use of stage make-up.'
I was thunderstruck at the news, and stared at the floor, unable to think coherently."

Senere, i december 1903, får Angier fat i Bordens notesbog:
"Yesterday I was able at last to read some of Borden's notebook. As Koenig had predicted I found it an engrossing read.
I have been showing extracts to Julia, who finds it equally interesting. She reacts more against his self-satisfied tone than I do, and urges me not to burn up any of my precious energy by getting angry with him again.
Anger, in fact, is not being kindled within me, although the way he distorts some of the events of which I have a knowledge is both pitiable and irritating. What is most fascinating to me is that at last I have proof that Alfred Borden was the product of a conspiracy between twins. Nowhere do they admit it, but the notebook is clearly the work of two hands.
They address each other in first person singular. I found this confusing at first, as perhaps was intended, but when I pointed it out to Julia she observed that the notebook was apparently not intended to be read by anyone else.
It suggests that they call each other 'me' by habit, and this in turn implies they have done it for most of their lives. Reading between the lines of the notebook, as I must, I realize that every event or happening in their lives has been subsumed into one collective experience. It is as if they spent their lives from childhood preparing for the illusion where one would secretly take the place of the other. It fooled me, and fooled most of the audiences who saw them in performance, but surely in the end it is Borden who is the fool?
Two lives made into one means a halving of the lives. While one lives in the world, the other hides in a nether world, literally non-existant, a lurking spirit, a doppelgänger, a prestige."

I øvrigt er jeg enig i at man ikke nødvendigvis skal sammenligne bog og film - det bliver man kun for irriteret af og det er hverken pænt overfor forfatter eller instruktør.

Vis SpoilerDet undrer mig lidt, at alle tager magien i filmen for givet. Da jeg gik ud af biografen, tænkte jeg umiddelbart, at 'kloningen' var Angiers sidste trick rettet mod Borden. Alt hvad vi får at vide om hattene, får vi kun at vide igennem den dagbog, som Angier skriver til Borden fyldt med falske informationer. Til sidst siger Angier, at tryllekunstneres store opgave er at få folk til glemme denne mundane og håndgribelige verden og i stedet tro på magi i et stykke tid. Selv om det eftersigende er anderledes i bogen (meget er anderledes i bogen), så er der ikke noget, der endegyldigt beviser, at maskinen/magien virker. Angier kunne meget vel have lavet et ganske enkelt trick med Root, som vi ser i filmens druknet i sidste billede, det sidste Prestige. Er der nogle modbeviser, der udelukker alle rationelle forklaringer/afsløringer af det sidste trick? Husk på at det eneste tidspunkt hvor vi faktisk ser en kloning (der hvor klonen skydes), er, da Angier forsøger at overbevise Borden om at den virker. Og det ville ikke være første gang, at Angier forsøgte at skabe en illusion.

Vis SpoilerBale siger jo hele tiden, at han let kan komme ud af det fængsel, og med en twin på den anden side, skulle det ikke være noget problem at komme ud?

Hvordan kan det være, at den ene tvilling, vælger at ofre sit liv, ved at blive hængt. Kan bedre forstå den ene ofre sig selv, hvis det er en klon

Vis Spoiler Så vidt jeg husker (og alle andre, jeg kender, der har set filmen, også husker) ser du MANGE lig.. MANGE..

Selvfølgelig kan de da alle være look-alikes.. But come on - tror alligevel næppe han vil dræbe så mange andre mennesker..