Julian Cope presents Head Heritage

Head To Head
Log In
Register
The Modern Antiquarian Forum »
Wirral Megalithic Sites
Log In to post a reply

26 messages
Topic View: Flat | Threaded
david gregg
14 posts

Re: Wirral Megalithic Sites
Nov 20, 2017, 12:36
Hello. Thanks for your comments on uncertainty.
There are several sources of uncertainty on such sites.
1. the original layout of the stones over long distances using ropes or pacing dividers.
2. the errors of surveying by the OS mappers.
3. errors in my measurements using the 25 inch maps.
However providing the errors are not systematic they should not significantly distort the intended figure...in these cases the intention was clearly to create true circles. The probability of finding 7 stones (of 9 stones in the area) lying on such a circle by accident is minute at Overchurch. The multiple circle layout at Arrowe Park is even less likely to appear by chance. I do not have the space here to explain statistical theory. Please see my book.

The point about OS mappers sometimes including all stones in an area is valid. However that makes it even less likely that a group of stones would happen to form a geometrical figure on the ground.

Professor D P Gregg
Topic Outline:

The Modern Antiquarian Forum Index