The Download: AI's refusal problem and weight-loss drug side effects

Plus: The US has frozen green cards for Microsoft and other IT firms. We're putting too much faith in AI's ability to say no Today's AI models are trained to refuse a vast number of prompts. If you ask your chatbot how to poison a colleague or how to tie a noose, chances are it'll turn you down. But refusal fails, sometimes horrifically. Some people are attempting to use AI to hone biological pathogens and build autonomous drone swarms. Sooner or later, failed refusals may result in global calamity.