professor christian brugger is a bioethicist at st. john vianney theological seminary in denver. brugger disagrees with kurzweil that humans can ever come close to perfection with technology. >> i don't think that the technology is the problem. what i have concerns about is the philosophy that stands behind it, the idea that somehow we are going to be able to overcome human limitation or we're going to overcome death. >> reporter: what troubles brugger the most is the notion that technology will one day replace god. >> if we start to think about technology as a kind of savior, is it going to overcome our misguided ambitions? is it going to overcome those kinds of prejudices that cause us to hate our neighbor? to many of us who follow a religion, we'd say that god would help us to overcome those things. >> reporter: kurzweil argues that it's human nature for mankind to utilize technology to overcome human limitations. >> we are the species that does change ourselves. we didn't stay on the ground. we didn't stay on the planet. we didn't stay with the limits of our biology. if you w