I would just like you to know that I am typing this wearing a yellow jersey! Refraining from making the possible cow jokes here, I am wearing it in honour of the Tour de France which is currently in Yorkshire – where I live. Yesterday it was in the Dales, today in York itself. As you can imagine, the centre of York is virtually closed down to traffic and thousands of people are already congregating. I, myself, am sat in my usual Sunday morning haunt, writing this week’s waffle which is all about teaching technology.