TASK DEFINITION: We would like you to assess the QUALITY of each of the following argument (discussing Death Penalty) and determine if the argument is Valid or Invalid. A valid argument is clearly interpretable and either expresses an argument, or a premise or a conclusion that can be used in an argument for the topic of death penalty. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of death penalty.
PROBLEM: You have conceded that a difference in neurophysiologic fitness makes sense, but we should decide on a case by case basis.

SOLUTION: Invalid

PROBLEM: So I argue that 3000 years of use does provide evidence that capital punishment works.

SOLUTION: Valid

PROBLEM: However, one advantage with the Death Penalty is you can use it as leverage in plea bargains.

SOLUTION:
Valid