Sean Surprisingly I've never been to that part of Cumbria. I'll be in Carlisle in October though, one of my daughter's is graduating as a nurse.You are doing well - your posts have been useful and insightful - keep it up! Quote:trying to make specific predictions about certain aspects of a hugely complex system with millions of variables and unknowns involved.This is what I meant about the wilderness of mirrors. I still think I'm right about the effect of car accidents though. Even if the the shift in gene frequencies was only 0.5% in each generation this would still give a shift of around 20% - 25% per millennium. Edited by: PeterDF at: 8/26/03 10:51 am