Many of the tropes of Science fiction can be viewed as similar to the goals of transhumanism. Science fiction literature contains many positive depictions of technologically enhanced human life, occasionally set in utopian (especially techno-utopian) societies. However, science fiction's depictions of technologically enhanced humans or other posthuman beings frequently come with a cautionary twist. The more pessimistic scenarios include many dystopian tales of human bioengineering gone wrong. Transhumanist art has been defined by Natasha More as art that is based on the transhumanist principles, visions, goals and sentiments.