Other visionaries simply imagine what does not yet exist but might some day, as some forms of "visioning" (or gazing) can provide a glimpse into the possible future. Therefore, visioning can mean seeing in a utopian way what does not yet exist on earth, but might exist in another realm, such as the ideal or perfect realm as imagined or thought. Examples are Buckminster Fuller in architecture and design, and some of the pioneers of personal computing such as Steve Wozniak. Some people use mathematics to make visionary discoveries in the nature of the universe. In that sense, a visionary may also function as a secular prophet. Some visionaries emphasize communication, and some assume a figurehead role in organizing a social group.