— Doctor, I don't feel well, in fact, I don't know what I have. When I'm walking, I feel a kind of pain, don't know where it is but goes away suddenly, without knowing why. — Okay, let me give you a prescription for, said, the doctor. So, take a... don't know what medicament for don't know how long and don't know how many per day, and you gonna feel much better (dunno when...).