Hari Om! This is a great discussion. I have been a silent participant and was able to learn quite a bit. Thanks to every one. I also happen to read an interesting essay called "Einstein's Physics of Illusion" from a scientific point of view, which I hope will interest this august group. http://homepages.ihug.co.nz/~sai/einphysill_dobson.html Hari Om! -- Kris