In article ,
Nightjar cpb@ insert my surname here.me.uk wrote:
Both the Romans and the Chinese built walls to keep people out -
successfully, I understand.


Both of which required large garrisons and, if they had a military
purpose (the purpose of Hadrian's wall is disputed - it may have been a
customs control measure or even just a symbol of the power of Rome) it
was to resist attacks by marauding bands, not infiltration by
individuals.

Perhaps they didn't have a B&Q in those days where you could pop in and
buy a ladder?

--
*I don't have a license to kill, but I do have a learner's permit.

Dave Plowman London SW
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