The article is devoted to understanding the prospects of possible application of advanced technological developments in order to improve the biological nature of man. It analyses the ideas of Ray Kurzweil, who is a supporter of such transformations of human nature. It is shown that Kurzweil’s conclusions are of a worldview nature: in the near future, through the cyborgization of people, it will be possible to achieve a state close to immortality and, thus, solve the world-view issues of self-knowledge and create the conditions for unlimited self-development. It is concluded that such optimistic forecasts are insufficiently justified due to the limited possibility of modern technologies to “improve” a person’s life and help with the most difficult technical and ethical problems.