The point of waterboarding is to scare the person into thinking he is drowning, even though he is not.
Not quite. The point of waterboarding is to cause a temporary
physical degradation of the victim's respiratory system which subsequently inhibits oxygen uptake and brain function, combined with an intense "fight or flight" response that results in
physical effects such as extremely elevated heart rate, chest convulsions, actual
physical pain as the lungs are filled with water. The combination of extreme stress and reduced brain function often breaks the victim's will to resist cooperating.
I think if it can indeed save a nation from a terrible attack, waterboarding, under certain circumstances, should be allowed.
1. How
terrible an attack would qualify?
2. How would you know whether it can prevent an attack or not, in any specific case, until after you'd done it? Do you
really believe it's okay to treat people as lab animals to test a hypothesis that
maybe they have information which could prevent an attack?
I believe if no useful information comes from the prisoner after a few attempts at waterboarding, it should be stopped.
How would you know whether the information being produced is useful or not?
....even though he will not drown and will not die, ...
No such guarantee is possible. The extreme stress and progressive respiratory failure induced by waterboarding can certainly cause a heart attack, even in a very healthy person. Even with a doctor present, and a very well trained and professional team of interrogators, death is a real risk of the procedure.
... is worth the price of trying to protect a nation.
As horrific as a terrorist attack can possibly be, in no sense can it ever be said to be putting an entire
nation in danger, so your argument is based upon a false dichotomy fallacy, which means thay your inference is faulty and your argument is unsound.