I've encountered this numerous times with charting data for others. I find a great top level view of some key data, but it flies over their head and it never gets used.
This is probably our failure, not theirs. We can't expect our audiences to understand something the way we understand it.
Definitely, the key is to see things the way the users do, and provide only what they think they want to know. Seems like I'm stating the obvious, but doing the opposite is easier than it seems.
This is probably our failure, not theirs. We can't expect our audiences to understand something the way we understand it.