Robby and his pretty friend were rendered in Adobe Illustrator with exact point on point registration to create templates for cutting leather.
The poster design was licensed from Ted Turner to be rendered in colored leather on bomber-style jackets by Jeff Hamilton Designs for The Real McCoys. The limited edition jackets are collectors items

Illustration tells a story, explains a process and illuminates a principal. Sometimes great detail and intricacy is needed, and other times a simple gesture is clarity itself.

The best method for conveying information visually will be determined by both it's subject matter and within the context it is presented.

How-to and instruction manuals often use illustration because of it's simplicity and ability to concisely display information and instruction.
Illustration also allows the reader to focus on the ideas being presented.