Elaboration and complexity are two other traits typical of a creative thinker. He will constantly refine an idea until only he is able to remember all the details. Yet the more complex the task becomes, the clearer it becomes to its creator. Without writing down anything, he will be able to explain the process in excruciating detail. Curiosity, willingness to take risks, and originality relate to each other too.
Inventors are the most curious people.
They look at something that for you and me would be a minor annoyance and use that problem as a springboard to an invention. People sometimes ask me how I find my layouts for calligraphy. Imagination is the ability to envision the solution to a problem. He could examine his invention to determine points of wear, all without having built it yet. Instead of having the mystical notions that we often associate with it, creativity is, in essence, learning to use one's thinking skills.