If he wasn't born until 16 months after the Amiga A1000 was released, I don't see how he can imagine a world of green screens with just an MSDOS prompt and flashing cursor, or some very crude screens, and menus, then all the sudden something like the Juggler or Boing Ball demos show up and a few million jaws drop to the floor.
It is like the difference between living by candlelight and then suddenly being taken to modern day Las Vegas at night with all the lights turned on.
I remember BBC micro's being sold in Boots the chemist, the joy of the amazing graphics on 3d Ant attack and my first picture made with DPaint on the A500. It was all so damn exciting.
Now the most exciting things are either jailbreak projects (I really enjoyed turning my original XBox into a true multi media centre, among other projects) and new Amiga stuff. It all feels so incremental these days. Back in the day great leaps in computing made us all pay attention, it's just not the same now, it's just one little hop after another.
The Boing Ball marks a leap, one that made an impact on anybody who saw it at the time. It should be remembered for that.