Final answer:
The eggshell skull rule is a legal principle that holds a defendant responsible for the full extent of harm caused, regardless of the victim's pre-existing condition. It applies to situations where the defendant's actions cause harm to the plaintiff, regardless of their vulnerability.
Step-by-step explanation:
The eggshell skull rule is a legal principle that states if a defendant commits a harmful act against another person, they are liable for the full extent of that harm, even if the victim has a pre-existing condition that makes them more susceptible to injury.
This rule is applicable in situations where the defendant's actions cause harm to the plaintiff, regardless of the plaintiff's vulnerability.
For example, if someone with a thin skull is punched and suffers a serious injury, the person who threw the punch would be responsible for the full extent of the harm, even if a person with a normal skull would not have been injured.