Tool
http://www.scienceblog.com/cms/brain-represents-tools-temporary-body-parts-study-confirms-22536.html
If tools as objects can become extensions of ones body then what prevents the USE of tools from becoming extensions of ones mind?
I say nothing prevents it, that in fact its exactly what happens and further that mind can only exist this way. Our minds don’t stop at the edge of our skulls or even the at the ends of our limbs but instead are composed of the world around us.
Perhaps the feeling of consciousness is a temporary truth distilled from a dynamic world.
