For how long is that OK? Is it OK to torture someone until you've been able to achieve, let's say, six nines -- 99.9999% probability that they have no informat

For how long is that OK? Is it OK to torture someone until you've been able to achieve, let's say, six nines -- 99.9999% probability that they have no information for you? Is it OK to go for 10+ nines, as long as our goal isn't to inflict pain -- and despite the fact that we are indeed inflicting pain, mentally and/or physically? Just for the sake of argument, let's say that 99.99% can be accomplished in 24 hours of pain infliction (torture) -- and let's say you'll get to 6 nines in 168 hours (7 days). Oh come on, who am I kidding -- as much as I appreciate the discourse, I can't even fathom or given consideration to it actually being something that can be realistically reasoned about in this way. =\