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With your logical fallacy, we might as well call everything alive a living organism and throw away all the descriptions we have developed over the years to properly describe living organisms, name them, categorize and identify different stages of their development. You can take your analogy even further and say that some atoms in the universe are 'future chicken in progress'. LOL.
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The only logical fallacy is yours. The start of life the moment of conception is the only clear and objective metric possible use when differentiating life from non-life. Any other division or "personhood metric" is utterly subjective. BADecker summed it up well above. Your failure to understand it is just that your failure.
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Removing a human life is different that removing a wart.
Determining when the embryo/fetus becomes a human life is judgmental. Nobody can make such a determination accurately. To do so means that the judgment could be at age 10, or at age 20, or at any other age. This is part of the reason we have wars. One group of humans says that another group of humans should be exterminated.
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A fertilized human egg is simply a stage in human life. Legal murder at this stage sets the stage to make it legal at any stage.
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What you can't seem to grasp is that you are accepting the moral exclusion of a vast portion of humanity. Such a process taken to its logical conclusion can just as easily be turned against you or more likely your descendants. A genetically engineered and "superior" branch of humanity may decide that your obvious inferiority makes you not a "real person" and mark you down for liquidation. Or perhaps an AI vastly superior to you in all ways will examine you as you examine the human embryo and decide that you are so far below its level of awareness that you don't count as conscious. After all is it not just to apply your own logical framework upon you? You may dismiss these possibilities as far fetched but technology is marching us day by day to the point where they will be very possible.
Go to the farmer's market and buy eggs and meat chickens. Then compare.
Your failure to understand the difference is astounding.
You are making a false equivalence logical fallacy.
Chick is not the same as a chicken. An embryo is not the same as a chick, a fertilized egg is not the same as an embryo.
And finally, a fertilized egg is not the same as a chicken.
Their genome is the same but they are not the same.
https://www.logicallyfallacious.com/tools/lp/Bo/LogicalFallacies/245/False-Equivalence