I'm not getting an intuitive grasp on what the days destroyed tells you? Is it how many people are holding bitcoins? What does a higher number mean, what does a lower number mean?
The increasing number of bitcoins means that there are more and more days to destroy, so I'm having trouble relating it back to behavior.
In a sense, its a more granular way of looking at money velocity.
Under BDD, if i understand it correctly, the single dollar case would result in a nearly 100% BDD while the billion dollar case is much more modest. It looks at each bitcoin independently. The dollar analogy would be if we kept track of every single dollar bill etc.