Gary Marcus, left, who founded a machine learning company, argued in a recent column for The Guardian that Sam Altman can't be trusted and that AI is headed in the wrong direction.Patrick Semansky/APGary Marcus, founder of Geometric Intelligence, testified before the Senate with Sam Altman in 2023.Once hopeful of Altman, Marcus now says that the OpenAI CEO can't be trusted.The AI expert also wrote in The Guardian that we're on the wrong path to AI.Sam Altman, as the CEO of OpenAI and poster boy for artificial intelligence, has made many calls for an AI that will benefit humanity and regulations to ensure the world will get there.But a leading AI expert says the CEO's actions contradict his public pronouncements, and the current path to AI is headed in the wrong direction.In a Saturday column for The Guardian, Gary Marcus, founder of machine learning company Geometric Intelligence and former head of Uber's AI lab, argued that Altman has repeatedly misled the public about his financial stake in OpenAI and questioned how genuine the CEO is when he calls for regulations.Once hopeful of Altman, Marcus wrote in the column that the OpenAI leader "seemed genuine" and appeared to share the same concerns about AI regulation when they both testified before lawmakers about the technology in May 2023."We both came out strongly for AI regulation," Marcus wrote.