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In the "beginning" it was in man's human nuture to hunt and gather for food for survival. Over time however, our human nature has shifted due to increase in technology (i.e. industrial food production). It is now within our human nature to buy artificially enhanced meat in prewrapped packages and shop for produce in stores rather than gather it from nature. Our human nature has addapted as a result of technological advances and I think they will continue to do so. For example, as the need to reduce industrial meat prduction increaes, new forms of meat production will emerge to help minimize its negative affect on the planet. In turn humans will adapt to the changes in a way that will affect the way they go about doing things; thereby affecting their human nature.  The question of whether or not we should change human nature to me is irrelevant. I think that as long as changes continue to be made human nature will continue to adapt out of neccesity regardless of whether we want it to or not.