Earlier quoted context omitted.
One's policy views might be based on morality, in which case one might not change them based on facts. An example: I oppose torture. You can show me 100 nations which ban torture and then suffer from preventable terrorist attacks, and it won't change my view. I would choose to ban torture even if it stops law enforcement from preventing some terrorist attacks. Some people hold similar views on taxation, redistributio…
I find that hard to believe. Surely there is some limit that would change your mind? Maybe if it would save 1000 lives per month? Or one million lives per month? I suspect you don't have any hard data on the impact of torture. Not saying that torture is good, just saying that even in your example, science might change your mind.
There will always be a probability.. is there a 70% chance he knows where the bomb is, and maybe only 95% chance that the bomb is actually in place, correctly assembled and activated. NOW how many people would you have to theoretically save to make it OK to torture him?
And then there's the human factor. Who wants to be the guy that didn't torture the 70%-terrorist whose bomb subsequently blew up a mall?
What science can answer how many innocents it is OK to accidentally torture to save a number of people?