What value does the biological limit have in the constitution of the life of a person?

Transhumanist narratives postulate the licit character and even desirability of applying the new technologies called GRIN (genetic, robotic, artificial intelligence and nanotechnology) to the radical modification of human biology, in order to improve our physical, psychological, intellectual and moral faculties and transpose limits such as sickness, aging and death.

Even though human history can be understood as a process of negotiation with our natural limits, we may ask ourselves: how far is that modification possible within the boundaries of biology? What costs would this modification bring along? How is our embodiment character related to our personal identity? How do the precariousness and the unrepeatability of our embodied condition relate with the meaningful character of an individual’s existence?