A woman calls in a plumber when her washing machine breaks down. The plumber arrives, studies the machine, then produces a hammer and gives it a hefty whack. The washing machine starts working again and the plumber presents a bill for £200. 'Two hundred pounds?' says the woman. 'All you did was hit it with the hammer.' So the plumber gives her an itemised bill: 'Hitting washing machine with a hammer - £5. Knowing where to hit it - £195.'
We use Google Adsense which uses cookies to personalize the ads on this page. By using our services, you agree to the use of cookies. Click here for more information on Google's use of data on partner sites