Dear Theodora I am not offended. If this was on a post on my private facebook we can drop back and forth links with different experiments about it as much as we want to. Unfortunately, it is a blockchain, where nothing can be deleted. I wish I knew this in advance before I started here. I use my real name and I am so to say a public person with websites, google rankings and so on. This is one of the reasons why I prefer to skip long discussions on public posts. Thank you for the links, when I have more time will look at them.