system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is the penalty for attempted murder often so much less than that for murder, when often the only difference between attempted murder and successful murder is how successful a doctor or paramedic is in reviving the victim, which has no bearing on the severity of the act itself?
gpt
Attempted murder isn't necessarily always whether the doctor can revive the victim. It can also be a failed murder plot. It's like the difference between the different degrees of murder and manslaughter. Premeditated murder is punished more severely than provoked murder. Because premeditated murder means there was intent to begin with, provoked murder doesn't necessarily mean the person intended to do any harm, maybe it was due to an emotional state like walking in on your cheating spouse. Just as manslaughter is when you kill someone by accident as in vehicular manslaughter. You didn't mean to run down that pedestrian, but you did. unsuccessful muder could have been a muder of passion like walking in on your cheating spouse, but you failed to kill the person. You would be charged with attempted murder, but likely sentenced to a lighter penalty than actual murder because at most you commited assault with intent to kill. 

It's all about three things: Intent, Circumstance, and Result. 

Was it planned or in the heat of the moment? Was the intent to kill or just harm? Was the result death or injury? Or was the entire thing an accident thereby renduring it manslaughter?