Google has ignited a social media firestorm on the nature of consciousness after placing an engineer on paid leave who went public with his belief that the tech group’s chatbot has become “sentient.”

Blake Lemoine, a senior software engineer in Google’s Responsible AI unit, did not receive much attention last week when he wrote a Medium post saying he “may be fired soon for doing AI ethics work.”

But a Saturday profile in the Washington Post characterizing Lemoine as “the Google engineer who thinks the company’s AI has come to life” became the catalyst for widespread discussion on social media regarding the nature of artificial intelligence. Among the experts commenting, questioning or joking about the article were Nobel laureates, Tesla’s head of AI and multiple professors.