We don’t say this lightly. Among philosophers, “bullshit” has a specialist meaning, one popularized by the late American philosopher Harry Frankfurt. When someone bullshits, they’re not telling the truth, but they’re also not really lying. What characterizes the bullshitter, Frankfurt said, is that they just don’t care whether what they say is true. ChatGPT and its peers cannot care, so they are, in a technical sense, bullshit machines.