And as ever, I am slightly dismayed at the extent to which a basically abstract idea can, when questioned, seriously affect things like the food on my plate and the roof over my head.
The existence of a £5 note in your wallet is based upon the confidence of someone else and the fact that somebody borrowed money. Sobering thought.
(btw, I'm learning LOTS about stuff I'd never thought I'd learn about, on this site. Thanks guys!)
I think we all are.