Have you ever thought about what makes a good design good? Is there any hidden language that makes for a good design? If you would like to know answers to these questions, this short lecture will help you acquire the skill of looking at world through eyes of a designer. You will learn properties of a design. You will learn how to distinguish between a good and a bad design. Not a designer? No worries. This lecture about design is especially for non-designers. It is filled with examples from ever-day life so everybody will understand. No matter the area of their expertise.