Today is World Book Day and primary school children across the UK will be dressed as their favourite fictional characters in front of laptops with their classmates.

Before we can begin to understand AI, we need to learn about the edge. A lot of people have never heard of the edge, but in truth it’s a bit like the chicken and the egg – you can’t have one without the other. For clarity, the ‘edge’ we are talking about involves the device on which you’re reading this article.