Ocean: A body of water occupying about two-thirds of a world made for man - who has no gills.
Neither does man have gills for living in a water environment yet it is not sinful to explore the depths of the oceans in search of food or other blessings.
In my books the technology that I choose to talk about has to serve the themes. What that means is that I end up having to cut out a lot of cool technology that would be really fun to describe and play with but which would just confuse everybody. So in 'Amped ' I focus on neural implants.