spend two to four hours helping test Bard, its new artificial-intelligence chatbot for search. The company could decide to layer a reinforcement-learning model on top that would be trained with answers written by Googlers to help it understand which values the company wanted Bard's answers to exhibit, whether it be in terms of structure, tone, or other qualities. Bard and ChatGPT have a tendency to "hallucinate," a term the industry has adopted to say the bots make things up