American designer Paul Rand (1914–1996) defined design as a unified activity, based on analysis and governed by imagination. Throughout his lengthy career – in which he created some of world’s most successful and recognizable logos such as those for IBM, UPS, and ABC – his design work was governed by fundamental principles such as beauty, intelligence, repetition, symbol, and humor. He set new standards for graphic design.
When David Carson worked with Pepsi Cola in one of Pepsi advertisiment, he showed a long paragraph of text in the shape of a pepsi can or bottle, making a entire paragraph saying all kind of things that relate to every part of the demographic in some way. Using a black color font, capitals, and the same size of the typography you can read all the expectation people had and with red color, lower case and big fonts you can red the final message from Pepsi.