Hi, It's me again, One thing I have never been able to justify in my mind is , since the feeling is no two people develop PD in the same way, how, on earth, can stages be set? Do you say to yourself, o.k. now I have this I must be in stage 2, or whatever. What are the peramiters for the different stages? This may be an elementary question but I have it for some time and the more I read these letters, the more I wonder. Thanks, everyone and keep smiling Elizabeth