Human Embryos, Human Beings

Book excerpt: A tale of two ontologies : are humans designated or discovered?. - Ontology and embryos : on being an embryo. - Arguments from ontology : it can't be human because it contradicts, ontologically. - Arguments from potential : it can't be human because it contradicts, factually. - Arguments from observation : it could be human, but the facts suggest otherwise. - Developmental systems theory and fuzzy organisms : it's not human until we say it's human. - The postmodern connection : form, fiat, and intention. - Humans and organization : defining the hallmarks of human existence. - Some difficult cases : a practical guide for evaluation. - A contested case : altered nuclear transfer : how to evaluate entities produced by experimenters. - Metaphysics matters.