Question

What are the costs vs. benefits of implementing body scanners in high schools to reduce the number of weapons on campus annually

Answer 1

Metal detector or any other advance technology could be used for body scanning. Using of it has some benefits and costs; these are explained below:

Benefits: (1) Probability of attack (Pa) in school if there is no such scanning.

(2) The loss arises in the school (Cl) (may be loss of life, loss of assets, loss due to mental illness among students, etc).

(3) The minimization or decreasing the risk (delta R) of attack. It gives certain amount of relief that the attack is prevented.

Costs: There is only one cost that is the cost of such scanning security (Cs).

If the (net benefit/cost) ratio is more than 1, the implementation should be done. Here the net benefit formula is as below:

Net benefit = (Pa × Cl × delta R) – Cs