What does it take to break a person? Torturers and interrogators would be able to provide statistics. This many nights without sleep, this many needles, this much water, this voltage of current on this many occasions. But there is considerable variation in people's ability to withstand torture. Sometimes one can achieve the desired result simply by showing the instruments and explaining what is to be done with them. Sometimes it takes weeks; one may be forced to restart a heart which has given out from the pain, and even then one may not manage to break the subject down. However, it is presumably possible to discern some kind of average. This many needles, this many blows to the soles of the feet, before most people are sufficiently destroyed to give up what they once held most dear. But in everyday life?