Okay. Thank you, Keith.

It's just that I hear so many figures bandied about (and not just here) with the word "estimate" attached to them that one would rather like to know if these estimates are based on anything substantial, or merely the bias of those presenting the statistics.

It pays to be cautious and skeptical in a world in which propaganda and disinformation exceed actual hard data by many orders of magnitude.

Mark Twain said it when he outlined "lies" in order of enormity:

"There are lies, damned lies--and statistics."

Don Firth