Final answer:
The Doctrine of Transferred Intent applies when an individual with the intent to kill uses a deadly weapon and inadvertently harms a different person. This legal principle holds the perpetrator responsible for the harm caused regardless of their original target.
Step-by-step explanation:
When discussing the application of legal doctrines to situations where there is an intent to kill and a deadly weapon is used, the most relevant doctrine to consider is the Doctrine of Transferred Intent. This principle applies when a person's intention to harm one individual inadvertently causes harm to a different person. The intent to harm the first individual is 'transferred' to the unintended victim, making the perpetrator legally responsible for the consequences of their actions, even if the outcome was not their initial plan.
In the context of the question's examples:
The intentional killing of an innocent person is murder.
Abortion is the intentional killing of an innocent person.
Therefore, abortion is murder.
It's important to note that the given syllogism is a philosophical argument rather than a legal doctrine and the characterization of abortion as murder is not a statement of law but rather a contentious ethical and moral position debated in society.