Why torture doesn't work-"I gave a lot of false information in order to satisfy what I believed the interrogators wished to hear in order to make the ill-treatment stop.... I'm sure that the false information I was forced to invent...wasted a lot of their time and led to several false red-alerts being placed in the US," - Khaled Sheikh Mohammed, one of the high-value terrorists tortured by president George W. Bush, to the ICRC.
Did you enjoy the added security in Ohio malls? Did you enjoy the amber alerts that never led to anything?
The reason torture works on TV is purely systematic of the way the writer doles out information to move his characters forward in a story. The same reason wormholes don't exist - guys like Isaac Asimov would have had to write. "...and then the ship spent the next 23 million years slowly crossing the distance between stars...."