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Video: Surf Zapping

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b_sharp6/25/2011 7:13:11 pm PDT

re: #143 okiefrommuskogie

so when does it go from pre-human to human?

That’s the question isn’t it?

Aside from being the species we belong to, humans are different from other organisms in how our brains work, so two things should be considered - (1) when do the brain functions beyond survival start?, (2) At what point is the embryo viable given our medical abilities?