John and I are open mouthed with awe and wonderment. We are like two Neanderthals staring at a wheel. I appreciate that Neanderthals don’t talk but work with me. Imagine our knuckles scraping the lino and me grunting. ‘Wow.’ ‘How does it work?’ ‘Wow.’ ‘How does it open?’ ‘Wow. Just wow.’ ‘Where does the detergent …