Today's technology advances at an incredible speed, yet some inventions still remain unchanged and inspiring. Although there are many inventions that benefit our lives, only some inventions may still be alive due to the benefits they bring to people. In Therese Oneill's “Don't Change a Thing,” Oneill introduces us to the six eternal inventions that still exist today. Additionally, Jessica Guynn's article, "Douglas Engelbart Dies at Age 88," explains how Engelbart's passion and inspiration brought to the field of computing created today's revolutionary computer. While there are many inventions, many people abandon them or eventually change them completely. However, some inventions manage to survive and become timeless due to their usefulness and the inventor's passion and inspiration inherent in the invention. First, utility is truly one of the most important criteria that determines the value and lifespan of an invention. Without any benefit that helps people, an invention will soon be forgotten because the purpose of an invention is to bring positive changes and effects to our world and the human community. Therefore, usefulness plays an important role in contributing to the success of an invention. For example, the rocking chair is an effective invention that benefits people. With a thoughtful idea, it provides a function that "automatically adjusts the center of balance based on whoever sits on it, offering each seated person a unique and comfortable position" (p.4). With this useful benefit, it improves the lives of some people because it revives “people suffering from illnesses” (p.4). From this example we can clearly see the positive effect that a successful invention can bring us. Also, the core part of the card mentioned before is utility. With the fly swatter we could prevent the spread of diseases caused by flies or mosquitoes. These small insects are vectors that quickly spread diseases so the invention of the fly swatter helps us solve the problem. Finally, utility is important for a successful invention. In conclusion, the two main criteria for a successful invention are the usefulness and passion of the inventor who contributed to the invention. Most of the remaining inventions still in existence are due to their benefit brought to people. Rocking chairs, teapots and fly swatters are all useful in different ways despite their different functions. However, without the passion and effort of the inventor incorporated into the invention, it will not be successful. Even though there might be other criteria for the success of an invention, only the inventor's passion and passion contribute largely to its success.