Ch. 5 & 6

The main purpose of information design is to give the information. I find it interesting that information can be presented to a viewer in a comprehensible way, but there might be other ways of making its design more efficient, easier to intake, understand and memorize. Using parallelisms and multiples are two of those better ways. They allow the viewer to compare two or more things to each other; and that is how a human mind knows the world - through comparison. Comparison opens the doors to little things that otherwise could be left unnoticed. Parallelisms and multiples also help express such things as motion and time sequence that are hard to show on a flat 2-d surface. It is important to notice that some tricks make certain information designs work better, as Tufte pointed out the schedule for the people on the spaceship works better when folded, while an underwater guide to differentiation of fish works better on a single sheet, no flapping pages.
In information design the clarity of the system, effectiveness of its construction is most important and can be achieved through different techniques.