I just liked the way of explaining it to laypeople. Leaving all mathematics behind, taking a model that everyone understands (and yes, some commentators are missing the point, discussing how it is possible to un-mix colors).
For example, it hadn't explicitly occurred to me that it would be easier to separate the colors than it would the numbers. Before reading these comments I was assuming that the factor I was missing had to do with separating the numbers becoming exponentially harder of a problem as the numbers grew larger. Reading about the discussion of this metaphor in the comments helped me realize that I was missing a deeper and essential part of this puzzle that I've been yearning to understand concretely for years.
Totally agree that the metaphor is an excellent start for the layperson.