The problematic nature of photography is not unrelated to the problematic character of science and technology. So the questions of credibility, reliability, and objectivity that vex any informed approach to photographs arise also in our relations to science and technology. We marvel at the improvements and possibilities that science and technology bring, even while we worry about the ramifications. The natural world is being altered by the impact of technology, but technology itself depends upon the specialized applications of natural law. In a sense, technology also describes who we are as humans—both individually and as cultures. Our changing technologies reflect our dynamic attitudes and understandings, not only about the processes of nature, but also about our own positions in the universe of forces in which we live.