The only reason I'm a guest is that I've taken to using my iPad a lot more and I've forgotten how I'm supposed to sign in. I'll have a go later. I'm a complete horror with passwords. If I may be permitted a wry observation on Snail's last two posts, they are getting more and more intemperate and frustrated. I'm staying calm, as ever. Now hands up, folks, if you can guess how many times I've told Gastropodus obduratus here that the truth of evolution's existence on Earth is beyond science. The science all comes in the explanation. My left bollock hangs to the left and slightly lower than my middle bollock. That's not science, it's the truth. ;-). The science comes in the explanation of why it hangs lower and why I'm so fortunately-endowed. There is a difference. Even Popper might have agreed.