What does and doesn't constitute a retro game is not something you can pin down with scientific precision, but it doesn't stop Pat and Ian having a go. They suggest the latest retro system was Sega's Dreamcast, that debuted in 1999 and bowed out less than two short years later. Anything before that is retro, everything after that isn't - despite being on the third generational wave of games consoles since. Their argument is a sense of "feel" that attached itself to the Dreamcast and preceding machines, and that it was the last console to have a library partially made up by arcade conversions. While they recognise that for younger gamers growing up on the PlayStation 2 some will want to rediscover the games of their youth when they reach a certain age, but because of the vast size of its library (over 10,000 titles) collecting for the PS2 will not be the same as getting the complete NES game collection.
Allow me a geeky quibble before moving on to the wider point. While their argument may well be the case for the PS2 which, after all, sold over 150 million units, the other main (obsolete) systems from Microsoft, Sony and Nintendo have much more modest-sized libraries. Last generation's Wii has over 1,200, the PlayStation 3 795, and the Xbox 360 over 1,100. Future completionists won't find tracking those titles down for a complete set a superhuman endeavour. The second point Pat and Ian overlook is that Wii U aside, the PlayStation 4 and Xbox One are not backwards compatible with any preceding console. Hence those systems and game libraries, when replaced, will be bundled into the loft or flogged off on the cheap creating the potential for rediscovery after a decade or so, just how generations of gamers have always done when the next big thing has hit the streets.
Nevertheless, while you can fault the reasoning their essential point is right: nostalgia can never be the same again. Because of the way our culture has rendered impermanence permanent, nostalgia for what once was is ever present. In a life suffused with uncertainty and change, nostalgia offers the illusion of a point of fixity, as an anchor hooked in a seabed of old toys, old tunes, old clothes, old trends, and (good) old times. It tends to be bound up with our socialisation. It's not youth worship as such, it's less about lost beauty and more the irresponsibility, of learning and grasping how the social world works without being bound by its conventions. Throughout childhood and young adulthood the experiences we have are literally character forming, and the objects bound up with them remind us constantly of a more certain, if not safer, time. And, of course, culture factories are adept at repackaging and selling nostalgia back - think musically, think how Britpop was a conscious retread of 60s guitar rock. Think how that, 20 years on, has been used to flog retrospectives and media lifestyle copy. On and on it goes, nostalgia is as much subject to fashion as anything else.
It's difficult to see how this could ever be otherwise. But this experience has mutated with the coming of the internet and the explosion of social media. At the risk of sounding nostalgic for a disappeared mode of nostalgia, it used to be the case that you would hear a song, watch a programme, partake in some schoolyard craze, dress in a particular way, or whatever and then you would grow out of it. All that remained, apart from perhaps a few holdovers from childhood, was memory. You'd seldom if ever hear that great half-remembered soundtrack to your first holiday again, see the cartoons that structured your TV dinners, or play the very first video games you ever saw. But you could talk about them. How many nostalgic conversations have you had about kids' telly, old films, and so on? Too many to count, I'd wager. They were - and remain - topics of conversation. I am sure the student who lives right now in the halls of residence cell I occupied 18 years ago has exactly the same kind of wistful chats as I did back then, as have the other 16 occupants that stretch in between us. Yet what was different about pre-social media nostalgia was an unavoidable sense of loss. The fashions disappear, the programmes never get repeated, you move on from the scene of your youthful triumphs, people buy different music, and so on. You could not readily access the cultural products and experiences of a particular point in time without being there - and we can never go back.
Now, however, social media has given us something approaching an eternal present. This isn't to say things aren't changing, they always do. But like never before the cultural artefacts that are the stuff of nostalgia are instantly obtainable. In 2014, if I want to live in the 80s I can endlessly watch the cartoons I liked back then, play the games, listen to the music, and binge on the more obscure films of the period. In the mid 90s, to do that would require crate loads tapes and vinyl. Personal, subjective forays into nostalgia then were more or less a trip down memory lane. Now it is but a mouse click away. For people growing up in the age of social media (and whatever comes next) the nostalgic past is compressed and folded up in the present. A song, a show, a machine can remember it for you wholesale. Experiences can be live tweeted, instagrammed, filmed on smart phones, and stored as MP4s forever. The huge apparatus of voluntary self-surveillance can turn your experiences into personal artefacts that can be accessed tomorrow or 50 years from now. They are still facsimiles, the eternal present ceaselessly recedes as well, but the powers of digital recall are instantaneous. It provides an experience that bears a greater semblance to what once was, and it can be relived without end.
Nostalgia. Not what it used to be.