Imagine you are lying on a beach in the tropics. Waves are lapping gently over the fine white sand. Exotic birds chirp in the background, and you can feel the warmth of the sun's rays on your skin. You open a book to read and are served a chilled drink with ice cubes clinking satisfyingly against the glass. Every so often, music from the beach bar drifts over and the cicadas hum in the palm trees.