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11%% Image moved here from TechnologyMarchesOn and caption selected per Image Pickin' thread:
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15[[quoteright:270:https://static.tvtropes.org/pmwiki/pub/images/girl_floppy.jpg]]
16[[caption-width-right:270:"Alright, time to play me some \
17''[[VideoGame/KingsQuest King's Que]]''... oh."]]
18
19->''"Spies are used to battling cutting edge encryption and billion dollar security, but sometimes the toughest challenge is cracking something old and out of date. If you find yourself up against an obsolete tape drive loaded with arcane software, you can either find yourself a time machine, or admit defeat."''
20-->-- '''Michael Westen''', ''Series/BurnNotice''
21
22Our time-traveling protagonists need to recover a piece of information on a computer from our time and they end up stealing the whole laptop. The FridgeLogic asks why didn't they simply just do a file transfer? As it turns out, the future tech doesn't work with tech from our time. Even though the future technology has its roots in the technology that we have currently developed, it is not backward compatible with that of its predecessors.
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24Let's think about that for a moment. In the 1970s through the 1980s, the common forms of data storage for mainframes and minicomputers were 1/2", 1200' magtape reels (capacity about 60MB), and punched cards (96 bytes on the IBM S/38 card, 80 bytes on the standard Hollerith card). Minicomputers and microcomputers might use paper tape or 8" floppy discs. ''None of these are readable today'' by most equipment. In the 1980s-1990s, the 5 1/2" floppy disc and the 3 1/2 inch hard shell floppy were popular. Today, computers do not have floppy drives. And there was the Zip disc around 1995-2000, which was readable/writable either by an external drive or you could buy one to install like an extra floppy disc. Nobody uses Zip discs any more. Heck, most computers these days don't even have optical drives, and that's a form of physical media format that is ''still being used''.
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26Now let's go backwards. Today, in the 21st Century, if you have to move a medium-sized file, say a 2GB 10-minute video from one computer to another, what would you do? Copy it over the internet or onto an SD card or external hard disk. But let's say you wanted to take that video into the past and make it widely available. Prior to about 1995 access to the Internet was rare, and slow (most people at best had modems at 14.4kbps while the few poorer folks were still stuck at 9.6kbps, and a "broadband" 128kbps ISDN internet connection cost several hundred dollars a month. Cable internet, which promised supreme speed, was still in development at the time). Copy it from your external hard drive, jump drive, or SD card and adapter? Prior to 1998, Windows did not support USB and even then it wasn't reliable. But let's say you figured out how to connect your device, how do you copy it then? Copy it to or from flash media? Prior to about 2004, the most common form of flash-type external device was [=SmartMedia=], and the maximum size was a whopping 128 meg. [=SD=] cards didn't exist then, and while writable CD drives (capacity 500MB) were commercially available, writable DVD drives weren't.
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28And let's consider non-computer media: 33- and 45-rpm vinyl phonograph records, photographic film, photographic slides, reel-to-reel magnetic tapes, cassette tapes, home movies on 8MM film, video tapes. All either gone, or unreadable except by collectors who specialize in obsolete equipment.
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30Now, this is just what has happened between 1975 and 2020. Imagine the changes over a hundred or two hundred years. Needless to say, this trope is 100% TruthInTelevision.
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32This can also be applied to a post-apocalyptic future stories only if the equipment is in good condition due to RagnarokProofing. Otherwise it is merely a subversion or aversion of said Ragnarok Proofing.
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34Of course, when the record ''must'' be accessed, this is a job for MrFixit to rig something up to make that possible.
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36The inversion of this, where things that ''shouldn't'' be compatible ''are'', is PlugNPlayTechnology.
37
38----
39!!In-Universe Examples
40
41[[foldercontrol]]
42
43[[folder:Anime & Manga]]
44* ''Anime/CowboyBebop'': Spike and Jet hunt through esoteric tech shops, black markets and ancient ruins, to chase down a working Betamax VCR, which is so scarce even avid collectors don't have much hope of seeing one in their lifetime. They have a tape that supposedly holds clues to Faye's past -- how far from the past she must have come from in order to have ''anything'' recorded on Beta is the biggest clue. Ironically, when they finally do find a VCR in a derelict museum it turns out to be VHS. (Made funnier because they had their choice of [=VCRs=] in the museum, and chose the VHS because the tape slot was bigger.)
45-->'''Spike:''' Which one do we take back?
46-->'''Jet:''' Uh...let's see...well, they say the greater serves for the lesser.
47-->(later, on the ''Bebop'')
48-->'''Jet:''' Hm...
49-->'''Spike:''' What's wrong?
50-->'''Jet:''' The size.
51-->'''Spike:''' What about it?
52-->'''Jet:''' It won't go in!
53-->'''Spike:''' Push harder!
54-->'''Ed:''' Uhhh...that's the wrong one!
55-->'''Spike and Jet:''' Huh?
56-->'''Ed:''' You got a VHS!
57-->'''Spike and Jet:''' Huh?
58-->'''Ed:''' ''<giggles>'' It won't play Beta!
59-->'''Spike and Jet:''' [[OhCrap Huh?!]]
60* A significant amount of the plot in ''VisualNovel/SteinsGate'' consists of the cast's struggle to obtain a very old model of computer called an [[BlandNameProduct IBN]] 5100, because it's the only piece of technology capable of undoing the AlternateTimeline they've created, due to the fact that it was used to ''create'' that timeline in the first place, using a method that wouldn't be compatible with a newer model.
61[[/folder]]
62
63[[folder:Fan Works]]
64* In Erico's ''VideoGame/MegaManX'' fanfic series, the Cossack-class Robot Masters are recommissioned at one point in ''Demons of the Past'' to help protect Russia. However, they prove to be incompatible with 21xx technology for their internals, so the tech/medic who was sent to do the upgrading had to cannibalize the now-useless Cossack Fortress Guardians for parts like superconductor cabling and power control components. They were also not willing to risk overloading on 21xx subtanks and stuck to their stockpile of E-Tanks from the Classic Era.
65* In ''[[https://www.youtube.com/playlist?list=PL1F471B8D4250D1FA Touhou: The Cursed Tape Enters Gensokyo,]]'' Yukari is unable to find a ''VHS'' compatible player in Kourindou's stock, despite the piles of forgotten "modern" digital devices he had collected from the outside world. In a humourous inversion of what happened in ''Cowboy Bebop'', she ''does'' find a Betamax VCR instead.
66[[/folder]]
67
68[[folder:Literature]]
69* In the ''Franchise/DoctorWho'' ''Literature/PastDoctorAdventures'' novel, ''[[Recap/PastDoctorAdventuresIllegalAlien Illegal Alien]]'' the Doctor complains that his [=TARDIS=] can decide the most complex alien computer programs and link with his brain but can't play 20th century audio cassettes. He ends up using a custom boom box he made for Ace from various alien technology including Time Lord and Alpha Centaurian.
70[[/folder]]
71
72[[folder:Live-Action Television]]
73* ''Series/BurnNotice'' has this happen in the present. In one episode, Michael finds an old tape drive that a rival was after in a wall. The next episode, in a voice over, he explains that old technology is often a spy's biggest headache for just this reason, before we hear Fiona say, "Fourteen phone calls, seven data recovery experts and three hours of arm twisting to find out what's on this thing [[ShaggyDogStory and it's unreadable!]]"
74* ''Series/{{Continuum}}'' plays with this. On the one hand, when Kiera arrives from 2077, her super-advanced AugmentedReality implant can't interface with 2012's internet, phones, or pretty much anything else, though she is able to use her suit to brute-force hack an ATM. On the other hand, when she arrives she accidentally contacts a TeenGenius playing in his lab--because he's in the middle of ''inventing'' the tech she's using.
75* In ''Series/{{Journeyman}}'', Dan has to steal a phone charger from his past self so he can keep a phone that will work during time jumps of a certain length, because the rapidly changing state of phone technology over the last ten years caused him a great deal of trouble.
76* An episode of ''Series/WhiteCollar'' has a present-day example. Mozzie breaks into a high-security vault expecting to copy an algorithm onto a thumb drive only to find that it's stored on a platter-sized floppy disc.
77[[/folder]]
78
79[[folder:Video Games]]
80* In ''VideoGame/MegaManZX'', Aile and Vent have no problems using the 20XX Energy Tanks from the Classic series, while in the ''[[VideoGame/MegaManBattleNetwork Battle Network]]'' series, Lan and [=MegaMan.EXE=] have no problem exploring ancient parts of the Internet.
81* A character in ''[[VideoGame/ShadowrunReturns Shadowrun: Dragonfall]]'' keeps his notes on ancient DVD-R/W recordings. You have to go on {{Fetch Quest}}s to track down an old DVD player and an analog TV with the proper inputs to connect it before you can view them.
82* In ''[[VisualNovel/MaxsBigBustACaptainNekoraiTale Max's Big Bust 2: Max's Bigger Bust]]'', after you arrest [[spoiler:Hector Von Haus]] for [[ItMakesSenseInContext trying to open up a Frakk]], Ellie and Aisha try to hack his computer for his emails, since Max couldn't use the USB stick intended for that purpose, seeing as the computer is 1994 vintage. The problem, along with the whole 1994 vintage thing, is that it uses an obscure proprietary OS made by a small (and long since bankrupt) Australian tech company in the 90s with a source code described as "notoriously difficult to work with." They have to source another computer of the same model to develop a hack they can use to get in without losing the data.
83[[/folder]]
84
85[[folder:Webcomics]]
86* Averted in ''Webcomic/CommanderKitty'', where [[http://www.commanderkitty.com/2011/08/28/process-of-elimination/ Zenith can find adapters for a wide variety of present-day interface formats]]...though [[{{Robosexual}} connecting with a]] ''[[{{Robosexual}} device]]'' [[{{Robosexual}} isn't her problem.]]
87* Conversed on ''Webcomic/ManlyGuysDoingManlyThings''. Another character suggests that, since the Commander is from the future he must be able to fix a modern-day computer like it's nothing. He responds by pulling out a broken abacus and demanding that the other character fix it for him. He later reveals he carries that broken abacus around everywhere he goes specifically because this conversation happens to him so often.
88%%* Mocked (sort of) in [[http://www.qwantz.com/fanart/dino-untitled.png this]] piece of ''Webcomic/DinosaurComics'' Reader Art. (How is this being mocked?)
89[[/folder]]
90
91[[folder:Web Original]]
92* The story of John Titor, supposedly a time traveller from the 2030s who appeared on [[Radio/CoastToCoastAM Art Bell's]] forum in 2000, revolved around this -- in the post-nuclear-war future he came from, the [[http://en.wikipedia.org/wiki/2038_problem Year 2038 problem]] had yet to be solved, and he had been dispatched to a time before the war in order to acquire an IBM 5100 for use in developing a fix.
93%%* Subverted in [[http://seenonslash.com/node/4137 this]] Slashdot exchange. (Do not force people to leave the page in order to see what the example actually is.
94* This used to be the case, along with RockBeatsLaser, in ''Website/OrionsArm''. For example, different colony ships (launched decades or even centuries apart) would experience incompatibilities in their information systems, propulsion systems and docking equipment, and sometimes even their environmental requirements and genetics. [[https://www.orionsarm.com/eg-article/57739a893df5c The Compatibility Protocol]] was created to avert this.
95[[/folder]]
96
97[[folder:Western Animation]]
98* In ''WesternAnimation/TheBatman'' episode "Artifacts", a 1000 years in the future, archaeologists discover the Batcave. Their advanced computers cannot interface with or download the Bat Computer's data. Fortunately, Batman saw this coming and etched the computer's data in binary code on titanium sheets. They are able to scan that into their computers, [[FlingALightIntoTheFuture which gives them instructions on how to defeat the ageless Mr. Freeze]].
99* ''WesternAnimation/BeastWars'':
100** The Maximals, the descendants of the Autobots, can't use their ancestors' hardware in conjunction with that of Maximal technology. Somewhat justified in that both pieces of technology they're attempting to use in conjunction are cobbled-together, oft-patched desperation-grade junk in the first place. And, y'know, the fact that the Autobot tech they're trying to use is over ''three million years'' older than their Maximal tech and is built on a different scale.
101** Even the smarter Maximals can't figure out how the Ark was ''made'' in the first place.
102-->'''Optimus Primal:''' "Die-cast construction. [[MythologyGag It's a lost art...]]"
103* Subverted in ''WesternAnimation/DannyPhantom''. Apparently, technology in the future (or at least Skul Tech) is still eligible for Tucker's PDA to hack through. Lampshaded when Tucker declares his hacking skills are ''just that awesome'' or just very, very sad.
104* Averted in the ''WesternAnimation/MegaManRubySpears'' episode "Mega X", where the eponymous future robot [[PowerCopying scans and copies]] the weapon of Snakeman, an older robot. He can improve on the originals, too, as a single shot destroys Wily's weapon. Wholly justified, as X is based on Rock's design and has a modernized version of the Weapon Copy system, so he can copy anything Rock can.
105* ''WesternAnimation/SouthPark'' has the episode where Cartman froze himself to avoid waiting for a Nintendo UsefulNotes/{{Wii}}. When he is thawed out (500 years later), he discovers that future displays aren't compatible with those of his time.[[note]]This doubles as HilariousInHindsight, as by the end of the 2010s, you'd be hard pressed to find a TV with component inputs that could take full advantage of the Wii's video output, and lower-end [=TVs=] had even ceased to have composite inputs.[[/note]]
106[[/folder]]

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