by Ian Clarke I was in the pub last night, and a guy asked me for a light for his cigarette. I suddenly realised that there was a demand here and money to be made, and so I agreed to light his cigarette for 10 pence, but I didn't actually give him a light, I sold him a license to burn his cigarette. My fire-license restricted him from giving the light to anybody else, after all, that fire was my p