Elon Musk and Sam Altman claim we've reached the AI singularity. But how would we even know that happened?

Elon Musk and Sam Altman have claimed that humanity has reached the AI singularity, but scientists and philosophers say there is no agreed-upon definition or test to confirm such an event. The concept, popularized by mathematician John von Neumann and futurist Ray Kurzweil, refers to a hypothetical point where AI surpasses human intelligence, yet experts argue that without clear metrics, the claim remains speculative.