"If you have to explain it, it ain't working."

“Design is not just what it looks like and feels like. Design is how it works.” —Steve Jobs
What are "The Elements of Art & The Principles of Design" 
and why are they such a big deal?

Think of the Principles of Design as a Thanksgiving meal.  The entire “event” is the Principles: the unity of the family, the rhythm and flow of the day, the variety of the dishes and people.  

The Elements of Art are the individual things that contribute to the event: the turkey, the table setting,  the kid’s table that always seems to be more fun.