In my own terms we have to explain where it comes from, because placebo is some kind of cure from imaginary illness
Suppose we have human/patient with imaginary symptoms and ailments (very common in nowadays though)
Normally I would clasified this as mental disfunction when patient is convinced that his/hers stage of illnes can be cured with certain medicine-fully convinced meanwile all sighns/examines by doctor normally shows that there is no such condition.
For a win win situation doctors came up with an idea to serve that patient empty injections or pills that they believe contain medicine can experience an improvement in a wide range of health conditions than it comes to recovery- placebo effect.
Hope sounds reasonable
RE: Quiz