What distinguishes "first-degree murder" from "third-degree murder" in Pennsylvania?

In Pennsylvania, the distinction between first-degree murder and third-degree murder primarily revolves around the intent behind the act. First-degree murder is characterized by a specific intent to kill, which means that the perpetrator planned and premeditated the killing. This level of intent indicates a calculated decision to take someone's life, and therefore it results in the harshest penalties under the law.

On the other hand, third-degree murder involves a killing that occurs without the specific intent to do so, often categorized as a result of reckless conduct or actions that show a blatant disregard for human life. This implies that while the act is intentional, the intent does not specifically target the victim for death, thus placing it in a different legal category with different consequences.

The other factors such as the nature of the weapon used, the location of the crime, and witness testimonies do not define the legal classification of murder degrees. While they may play roles in a case's specific circumstances, they do not alter the fundamental distinction regarding the perpetrator's intent that differentiates first-degree from third-degree murder.