Working in Fahrenheit is, I am aware, still popular in the Colonies. Over here, of course, it is the preseve of those people who, after 52 years, still insist on changing prices back to 'old money', and old prices: "Do you realise you just paid 25 shillings for a loaf of bread? They used to be fourpence!" - How come everything back then used to cost fourpence?