Ok, a friend of mine told me something quite amusing just now.
A friend of his was standing on a street in London by the Thames recently, holding a map and looking around. She was trying to locate where she had arranged to meet an estate agent. After a while, a passing woman came over and asked her if she was lost and whether she needed help.
She replied "No, thanks, I'm meeting an agent here in a moment." The other woman stepped back with a raised eyebrow, looked her up and down, turned and walked off, looking back occasionally over her shoulder in a rather odd way. The young woman was somewhat surprised by this behaviour, but realised the reason when she turned around and realised she was standing outside the MI-5 building...
pca
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Experience is what you get just after it would have helped...