Kids don't know about file sizes and hard drives and stuff because they never got, like we did, the leap from floppy disks to CD-ROMs.
The presenter on the telly would hold up the big thick phone book and say πΉ isn't it remarkable that all this information can fit on one plastic square. But there's a new technology coming in! Inside this new plastic circle, you can fit ALL THIS!
And there'd be this massive overflowing pile of phone books, stack them into an armchair and sit in it, more than you could read in a decade, all in this one shiny miracle circle.
Tell kids about that today and they'll say what's a floppy disk, what's a CD-ROM, what's a file, what's a phone book, what's a telly and what's information