Re: Pre-implantation diagnosis and balanced translocation

From: Adolfo Etchegaray (aetchegaray@arnet.com.ar)
Sat Mar 27 08:29:32 1999


-----Mensaje original----- De: Braun, R. Daniel <rbraun@iupui.edu> Para: Multiple recipients of list <ob-gyn-l@talk.obgyn.net> Fecha: Viernes 26 de Marzo de 1999 16:54 Asunto: RE: Pre-implantation diagnosis and balanced translocation

>In my humble opinion, life Human life begins when there is enough brain
>cells present to create the critical mass necessary for thought. As best I
>can tell, thinking is what separates Human from Non Human.

Dan, your opinion really makes sense. It´s true that human´s unique capability to make elaborate abstractions has drawn the line between Homo sapiens and the rest of the phyla of the reign Animalia. But, are abstractions (or "thoughts") really unique to humans? Was there a moment in evolution when an animal evolved from being a strict "non thinker" to a "human thinker"? (was Australopithecus afarensis capable of thinking? If so, why weren´t its thoughts to be considered "human"?) Higher primates have their own primitive "thoughts". These subject was thoroughly explored by Carl Sagan in his 1978 Pulitzer awarded book "the Dragons of Eden". Ontogeny repeats phylogeny. The concrete thing is: how can one really measure (biochemically?) when an embryo starts having HUMAN thoughts? Is it possible to measure in the lab the beginning of conscience (meaning notion of ones´s existence)? Why shouldn´t one choose the human hand or the bipedalism as the *human criteria* (they are almost so unique as intelligence)? Can we really measure the *first* human thought?

Thanks for your time (and braveness... many doctors that seem to have always an answer for every question are now sort of "laconic")

--
Adolfo Etchegaray
aetchegaray@arnet.com.ar
Buenos Aires. Argentina
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" I don’t want to achieve immortality through my work . . . I want to
achieve it through not dying."
Woody Allen




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