The dream – or nightmare – for AI is that it will one day be able to perform like the human brain. That concept of general AI (broader intelligence beyond a narrow area) has remained tantalisingly out of reach – or safely so, depending on what science-fiction films you watch.

Like the human brain, AI research comes in two halves: symbolic and transformer-based models. Chris Edwards explains how these two halves are now coming together in an awkward but more effective whole and what that means for the quest for general AI.

Meanwhile, narrow AI is getting everywhere. This year’s AI market of around $90bn is forecast to multiply by ten times within the next seven years. No wonder that big tech is becoming more involved, taking up the best research and swallowing up AI start-ups. Paul Dempsey hears about the calls to make it all more democratic.

Nations, too, are scrambling for the lead in AI. The latest national strategy comes from the UK. We assess its...