"We still can't after all these years of civilisation help but leave our territorial mark or scat to determine ownership..."

Nor, it seems, do we learn that posterity may not share our certainties about our "gesture" in leaving a time capsule. This wouldn't be the first capsule left in Silbury. Dean Merewether's one, with its Christian tracts, is now viewed with disdain (although it did at least have the virtue of containing an apology for the intrusion, which is more than is being planned here, I bet). EH must have astounding prescience to be so sure that their capsule will be seen as appropriate by the future.

And what happened to the EH Silbury Hill Project Board's Conservation Principle No. 1, laid down at the start in 2001 - "Minimum intervention"?

Eh, EH?