One of the most terrifying things about being in your late twenties is that every so often, you catch sight of a date of birth which ends in something like "2010".
If you're anything like me, you'll like to think that people just stopped being born after about 1995; a time in which everyone was caught up in deciding which Take That member to scratch a heart around with the pointed end of a compass on their pencil case, not merely Tweeting their adoration of Harry Styles.
You'll like to imagine that everyone alive now should, and indeed does, remember a time when knowledge came from libraries, not from a mythical "search engine", or - sod it - a time before the internet itself.
The fact that all our worldly information is so readily available now - to the point where our capacity for memorising things is shrinking - is indicative of a more pressing concern: that there are children in the world at this very moment who have never booted up a CDROM of Encarta Encyclopedia, and magically produced the exact same "research" as everyone else handing in their homework that day.
The same goes for mobile phones. It's not the instant, hyper-connectivity of noughties children that worries me; more that kids these days will never have to search through the Yellow Pages for a house number and mumble a greeting to their crush's mother,
"Hello, Mrs Smith. Is Daniel there please?"
...before making stilted, quiet, awkward conversation while balancing carefully on the stairs; an operation that was always hindered by the meter long ringlets of stretchy phone cord which never quite reached anywhere out of parental earshot.
Worst still, by taking their first "I fancy you" steps via text message or Facebook, kids these days will never have to endure the tell-tale click of a phone being replaced on its hook, followed by the hot-faced embarrassment of their older sister yelling "Oooh! Who's MARK? Have you got a BOYFRIEND?" from her listening post in the kitchen.
BT phone boxes must seem like relics of another time to kids these days; make-do street toilets, public drug taking cubicles, an extreme last resort if you forget your mobile - not a place your best mate used to call you from when her parents regularly barred outgoing calls from their house.
And let us not start on TV on-demand services, which negate ever having an all-out sibling war over who recorded over the only VHS copy of Ghost with an episode of Byker Grove, or whose cassette recorder ate the ribbon on the latest Now...! double compilation.
Oh, kids these days. Those poor people born in 2013, whose idea of nostalgia will be a screen resolution without HD.
They're missing out.