Here’s an epistemological problem: I flew back from Amsterdam the other day and took £50 out at the airport while waiting for my bags to turn up on the carousel. It was a bank holiday so when I got home all the shops were shut and I ended up going to Chicken Cottage and spending £3.29 on some chicken nuggets and chips. This left me with two £20 notes and one £5 note and a few pieces of loose change. When I went to the local greengrocery type shop the next day that’s all the British money I had on me. I bought some groceries and a quiche for lunch (how healthy!) the total cost of which was £6.18 - so I hand over one of my £20 notes and a 20p piece and get back £4.02 change…
I look at the girl, the girl looks at me… and I say “I gave you a £20 right?”
And she says, “no, I’m almost certain you gave me a £10″, and takes the £10 she thinks I gave her out of the till to show me.
And then I start to think, did I give her a £10 note? If I did where the hell did it come from? Maybe I only got £40 out at the airport?
Since I go to that shop quite a lot she said they’d check the takings for the day and if they were £10 over then they’d give it back to me next time I visit. So I go back in today (twice, they hadn’t done the count this morning) and they tell me they weren’t £10 over and so that’s that.
Only I did take £50 out at the airport, and I’m certain I gave her a £20. Certain beyond any doubt? Well yeah, pretty much - as certain as I am that I’m not a brain in a vat at any rate. Oh well, it’s only money. It’s just that I did like that shop.