When the list was formed, it was defined as 20 years. Of course now, the list itself is over 20 years old.
Sigh ... well if we're really have this conversation.... I maintain that the present definition of "vintage", or at least how we see it over at Vintage Computer Federation, is no longer year-based. The proof: Windows 98. :)
Obviously the * majority * of vintage computing is the sweet spot that we all know and love -- 1960s, 1970s, 1980s. But just as a modern car can become an instant collectible -- think Dodge Viper, original Ford Taurus, etc., which were groundbreaking designs -- so too must we all as collectors keep in mind that not everything old is worth saving, and not everything worth saving is old.
