Photograph copyright: DAVID McMAHON
Have you ever wondered why emergency vehicles have the words "Fire", "Ambulance", "Police" or "Rescue" laterally inverted? It's so that when they are driving behind us, we see the word displayed correctly in our rear-vision mirrors. I guess that is a good way to illustrate today's theme, which is "Practical". And if any of my readers happen to know which emergency service worker thought of this brilliant idea, do let me know.