Tracing the trajectory of the Christchurch killer, and is AI a con?

The man who killed 51 people at two Christchurch mosques in 2019, was motivated by far-right extremism and white nationalist ideology. A new podcast traces the killer's digital footprint prior to the massacre. And the promise of AI (artificial intelligence). A linguistics professor warns that AI technologies, particularly large language models like ChatGPT, are often misrepresented as intelligent entities.