I don't see much discussion about the ability of these charts to condense large amounts of data into compact spaces. No mention of these devices ability to encode a concept into a visual experience... Not to put too fine a point to it but... What Would Edward Tufte Say?
...good point, like to see more of this type of comment in this thread.
Sounds like what you are saying is along the lines of (paraphrasing here) almost correct as opposed to precisely inaccurate.
I hope others will add more along the same lines.
^Not necessarily correlates with information retention.