"Particularly where it is associated with the more prosperous countries, or those that see themselves as bringers of civilization, torture may wear a humane, almost kindly face. It goes under euphemisms such as 'pressure', 'shock', 'stress' and 'duress'; and the perpetrators themselves will see a distinction between what they do and what they consider to be torture. However, this is as vicious a form of torture as any: it can leave people mentally and physically disabled—indeed, the practitioners acknowledge the potential to render people psychotic, in hours or days. The victim is typically subjected to physical punishments that do not leave obvious scars, and this means that, should the case ever come under legal scrutiny, physical evidence of torture may be lacking. However, many ways of causing extreme pain remain possible. The subject will be tightly handcuffed and restrained, often in a way that damages nerves and muscles; he may be suspended in painful postures, or forced to assume them himself, with damage to muscles and joints; he may be subjected to electric shocks. Typically, he will be kept in a small, dark, bedless cell, with inadequate food and variable toilet facilities, so that his own filth stains the floor and dampens his clothes. He may be exposed to extreme heat or cold, and perhaps forced to stare at the sun. Beatings with rifle butts and kicking with military boots can cause lasting damage; lashing on the soles of the feet can make walking painful for years. A doctor may well be present, persuading the prisoner that he is in the wrong and that all he must do is recant. The doctor may even provide medication—as a symbol of civilization, or to keep the patient alive (deaths in custody can be inconvenient), or to cause pain or disability."