Greetings ! I bet the "2" got the attention of all the people this is mainly intended for... But, it's not what you might think, it's just that I have a similar thread (without the "2" ) in the Philosophy Forum and I invite you people, aspecialy the experts, who may've not visited it for a while(like Hurkyl for example) to make your comments and ASPECIALY explanations there. Of course, in order for this thread not to be wasted as a mere announcement I'd like to hear your opinions here too. Maybe a more technical and expert duscussion can start here. (In which my humble role will probably only be to read the words of wisdom of other members.) Thanks ! Live long and prosper.