It is not how much empty space there is, but rather how it is used. It is not how much information there is, but rather how effectively it is arranged.
Edward TufteHere's the general theory: To clarify, add detail. Imagine that. To clarify, add detail. And clutter and overload are not an attribute of information, they are failures of design. If the information is in chaos, don't start throwing out information, instead fix the design.
Edward Tufte