Go to Raspberry Pi Initialization for more info about setting up your Raspberry Pi!!
This diagram shows the importance of design because if someone just tried to plug LEDs into a Raspberry Pi with no resistance, you can completely destroy the LEDs and Raspberry Pi.
There is more then one way to design a product just as there is more then one way to solve a problem. Many speakers, inventors, and CEOs have stated that the hardest part about solving a problem is finding the problem itself. It requires not only creativity and drive but it also requires knowledge in all fields so that you are constantly observing! Some of the most important products happened because there was someone who was plagued with an issue and thought that others would benefit from a solution as well.
A portion that is almost just as important as finding the problem is coming up with a design that will attract people and make the user's experience very good. If the product is a great idea but the execution or design is very bad then no one is going to use that product or others will take the idea and make it better. This is why it is so important to have multiple different product attempts and designs. Another important concept is allowing others to critique and review your product or concept. You will get first hand accounts about what could be better from potential customers!!