Invention is when someone comes up with a new way of doing something or a creation that has not existed before. An inventor thinks of something that nobody else has thought of, and then designs and builds it. Inventions can range from something as simple as a clever new way of doing something to something as complex as a new machine or technology. Many inventions are designed to make our lives easier or more enjoyable. For example, the invention of the computer has made it much easier to store, access and share information quickly and easily.