To recap, here's what was actually said:
Michael Cook: I presume from your question you picked AN ancient monument ?
James Randi: Yes we did. We very carefully, I must say, we carefully combed the whole area to make sure there was nothiing else that would match that description.
At no point is Michael told the nature of the ancient monument until Randi opens the envelope. When Michael did the dowsing he asked "is there an ancient
monument in this square?" and not "is there an ancient
abbey in this square?"
And as anyone who's read this thread will know by now, Randi's statement quoted above falls apart when the area represented by the map is scrutinized. There are
hundreds of ancient monuments on Randi's map, by anyone's definition of the term.
I've been looking at the YouTube comments and forum conversations on this topic elsewhere and some of them are just plain silly. This is my favourite silly comment so far, from the Skeptics Society
forum:
If you really think the dowser is real you would write to him. You are confused because you do not understand the difference that; he was asked to go on the show to demonstrate what dowsers "do", not for a "full experiment". The man was probably a stage actor. Do you realise that "Star Trek" is no a documentary?
A "stage actor"???!??!

Honestly.
Here's a YouTube [url=ttps://youtu.be/SUQ4j5Vq03s?t=348]comment[/url] from a couple of months back:
I wonder what made him pick that square as holding the ancient monument...maybe the fact that all the roads and rivers on the map led to and circled that area.
This is wrong for a couple of reasons. First, as we have demonstrated on this thread there are plenty of ancient monuments in the more rural areas of the map. Second, there are some quite prominent ancient monuments even in rural areas of Britain - has no-one ever heard of Salisbury Plain? Is the Uffington White horse in the middle of a city? I don't think so.
Here's another YouTube comment:
See how the map dowser even pretends or rather suggests to us,there is another monument - we are told however there is only 1 so he is wrong!
I think we've scotched that one, don't you? Interesting logic: "we are told" - and therefore it must be true. Critical thinking at its best????
Ian