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The endless debates on abortion are logjammed because the two sides cannot agree to the answer to a basic question: when does life start? Pro-lifers call abortion murder because they assume that life begins at the moment of fertilization. The pro-choice side denies this.
But clearly, The most early stages of embryogenesis, consisting of a ball of fertilized cells, called a blastula, cannot represent an individual. These structures can split, both naturally in the womb as well as in the lab, to create twins, triplets, or even an infinite number of clones.
So because this question of abortion hinges on when does life start, how do we define it?
How about reframing this question in terms of consciousness/sentience and brain activity? Because, after all, many difficult questions in medical ethics are resolved in the same way. For example, if a patient has had a massive traumatic brain injury or a stroke, and loses all electrical activity in their brain, most doctors and hospital ethics committees will agree it’s OK to pull the plug. It’s not that controversial. Of course, going from a fully conscious human being to being brain dead is not either/or; it’s all on a spectrum. There’s all sorts of states of delirium and semi-consciousness. Medical/ethical decision making in those situations is obviously much more complicated and difficult. But for all practical purposes, by the time all brain activity ceases, it’s not that difficult anymore. Just about everyone will agree that patient is dead.
But isn’t the journey from a bunch of sperm and egg cells to a baby born at birth similarly on a spectrum, just going in the opposite direction? Brain activity, and consciousness/sentience, do not happen suddenly. It’s not either/or.
Scientists have made some inroads in trying to understand when and how consciousness and sentience begin to develop in an embryo: around weeks 24-28, as thalamocortical projections and connections began to develop among various important parts of the brain.
www.scientificamerican.com
Can such recent research help us understand when life and consciousness/sentience begin, and therefore come to a resolution of this abortion debate?
But clearly, The most early stages of embryogenesis, consisting of a ball of fertilized cells, called a blastula, cannot represent an individual. These structures can split, both naturally in the womb as well as in the lab, to create twins, triplets, or even an infinite number of clones.
So because this question of abortion hinges on when does life start, how do we define it?
How about reframing this question in terms of consciousness/sentience and brain activity? Because, after all, many difficult questions in medical ethics are resolved in the same way. For example, if a patient has had a massive traumatic brain injury or a stroke, and loses all electrical activity in their brain, most doctors and hospital ethics committees will agree it’s OK to pull the plug. It’s not that controversial. Of course, going from a fully conscious human being to being brain dead is not either/or; it’s all on a spectrum. There’s all sorts of states of delirium and semi-consciousness. Medical/ethical decision making in those situations is obviously much more complicated and difficult. But for all practical purposes, by the time all brain activity ceases, it’s not that difficult anymore. Just about everyone will agree that patient is dead.
But isn’t the journey from a bunch of sperm and egg cells to a baby born at birth similarly on a spectrum, just going in the opposite direction? Brain activity, and consciousness/sentience, do not happen suddenly. It’s not either/or.
Scientists have made some inroads in trying to understand when and how consciousness and sentience begin to develop in an embryo: around weeks 24-28, as thalamocortical projections and connections began to develop among various important parts of the brain.

When Does Consciousness Arise in Human Babies?
Does sentience appear in the womb, at birth or during early childhood?

Can such recent research help us understand when life and consciousness/sentience begin, and therefore come to a resolution of this abortion debate?
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