This is basically the 'ticking bomb' scenario isn’t it. If the question was to keep torturing until “was Mr Bloggs a part of the meeting” is a yes then that is

This is basically the 'ticking bomb' scenario isn’t it. If the question was to keep torturing until “was Mr Bloggs a part of the meeting” is a yes then that is pretty much not valid as the subject will likely say anything to stop it. To find the location of bomb going off in 30 minutes is a very different matter as it’s a clear true or false question with a very direct answer.