The main reason why there are physical constraints to extract sensitive information is that science has not yet invented a less cruel method.
Humanity suffers the cruelty of torture because science has not yet found a way to extract information from someone who refuses to deliver.
It can never be known, but almost all the procedures in this style would not happen if those who need to obtain, urgently, important information could get without mortifying who owns and is unwilling to deliver.
Physical constraints exist because people need to get some information urgently have no other resources.
To some extent, the procedure is similar to that surgeons had to apply before the invention of anesthesia: the torture of patients was inevitable because it was considered important to save your life at any cost.
However, torture is another component impossible to accept: the alleged sadistic intent of the performers.
The victim and those close to her can not help thinking that suffering responds to a personal, pathological and perverse pleasure of the torturer. It is almost impossible for the martyrs accept the hypothesis that everything would be different if the torturers possess a less horrible way to get the information they need.
The inevitable assumption that the torturers enjoy causing pain has its main source of inspiration in the sadistic desires we all have, more or less content.
To know, we need only listen to the conversations of those who believe outraged possess a foolproof formula to curb crime. The pious old lady keeps in his heart as sadistic desires which, if run for a charge of torturing would be disqualified for excessive zeal.
Note: Original in Spanish (without translation by Google): La ciencia y la tortura.
(Este es el Artículo Nº 2.136)