By Jennifer RigbyThe technologist-turned-philanthropist said it would be better to focus on how best to use the developments in AI, as it was hard to understand how a pause could work globally. His interview with Reuters comes after an open letter -- published last week and co-signed by Elon Musk and more than 1,000 AI experts – demanded an urgent pause in the development of systems "more powerful" than Microsoft-backed OpenAI's new GPT-4, which can hold human-like conversation, compose songs and summarise lengthy documents. “But there are a lot of different opinions in this area