Avoiding Design Problems
There are many design problems which can occur, some of which involve a matter of style, color choices, placement of elements in a pleasing way, but what will be discussed here are things that have to do with visual perception.
Design and layout can have quite a range of appearance, depending on the purpose of the document, poster, or presentation you might be working on. In some cases, a goal is first of all to attract attention to your design, but even then, once you have that attention, you want to convey some information or meaning. Certain elements can either guide the eye to the important portion or maybe even guide the eye along a certain path. What you don't want to do is have non-informational elements blocking eye flow or causing the eye to keep returning to non-information.
Problems with Lines
This is why in many cases, in Wikis for example, it is recommended to be very sparing in the use of horizontal lines -- they impede eye flow.
The other thing to notice above is that while there are two black lines drawn on the white background, the positioning creates what has been termed a '1 + 1 = 3 effect', so that what you perceive is two black lines, with a third white line created by the boundaries of the black lines. |