i have been thinking about this subject for quite some time. most of the literature that i find is still focused on the anti and the breakdown as we age. i find endless studies on senescence and decay. with stem cells i thought that there would be a change in understanding that would lead us to the necessary shift to begin looking at what makes things grow, rather than what makes things die. i haven't seen much yet. mainly i see dithering about ethics of a small subset of the science. i see almost no discussion of the ethics of allowing all of our best and brightest, and friends and loved ones to continue to drop dead all around us. some of what you've discussed here i find refreshing, and i would like to thank you. we need more like you if we are ever to climb from this pit. we do still have many distractions. such as the death worshiping religionists who believe we are supposed to die. we also have the scarcity mongers who have trouble with the idea that if we can cure aging, surely we can come up with a way to make extra food and energy. i think buckminster fuller was instrumental in making those concerns irrelevant, provided we apply ourselves to the solutions. with extra life and a bolstered capacity for wisdom freed from decrepitude, we should find that many of our seemingly insurmountable problems quickly become a thing of the past. again i thank you, please continue your welcome inquirys into this, what i believe to be our most pressing challenge as sapient beings. one final thing, i have found very interesting the information of dave asprey and his bulletproofexec.com and many of the people connected with him. specifically the information he has gathered on cholesterol. i find his podcasts very illuminating. make of it what you will. thank you.