Read what you wrote although I doubt you will understand it the same way that I did, obviously and I can't be bothered to show examples.
As for hijacking threads, you do it all the time but that's entirely up to you. I just think it is quite sad but that's probably just me.
I've said my piece including all I have managed to find out about the Clermont plaque and have been looking for a photo for years. Even though it is not a very good one at least we can tell what it looks like. I was just happy that I had found one at last and wanted to share the information.