instruction:
We would like you to assess the QUALITY of each of the following argument (discussing Gun Control) 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 gun control. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of gun control.
question:
No, the gun (+one set of ammo) still costs more than restocking pepper spray for a lifetime (calculation: pepper spray @~Σ7 per year, handgun @~Σ500 = ~71 years)
answer:
Valid


question:
We are law professors and historians who have a deep interest in the Second Amendment and its implications for the regulation of guns and of gun ownership.
answer:
Valid


question:
Please credit most people with having enough wit not to fall for the "an armed society is a polite society" canard.
answer:

Valid