Robert and I were looking around the newly-refurbished ‘The Entertainer’ shop today, where I spotted this bubble machine with a dubious claim on it. The box’s strapline claims the makes “Up to 10 thousand bubbles in minutes” – but the machine is actually called the “Billion Bubbles generator”. I know this is very nerdy, but even if you take the top claim at it’s word, you’d have to leave the machine on for 70 days non-stop before you even got CLOSE to a billion – and even that is going on the assumption that we’re talking a US billion…