ok, i can see both sides, but in all honesty i just like to be of an opposing opinion at times
i say yes, but to a particular kind of torture
immanence
the shock of being stabbed is a physical torture, but on the level of information gathering, is indeed highly ineffective
however psychological torture is a much more effective route, especially with a pair, let one watch as the other goes mad, then begin to do the same to them when the other is broken, they will see the madness and torment its immanent arrival, it looming in front of them, and they would do anything at that point to stop it, when faced with that, most minds cannot think clearly enough to lie
physical torture is a slow merciless death, which they would die sooner than give the information
but knowing that you won't be allowed to die....i've been there, medicine conflicted, almost killed me and nearly drove me insane
at that point i would have given up any info just to have died swiftly