The authors have a specific definition of bullshit that they contrast with lying. In their definition, lying involves intent to deceive; bullshitting involves not caring if you’re deceiving.
Lesson 2, The Nature of Bullshit: “BULLSHIT involves language or other forms of communication intended to appear authoritative or persuasive without regard to its actual truth or logical consistency.”
Lesson 2, The Nature of Bullshit: “BULLSHIT involves language or other forms of communication intended to appear authoritative or persuasive without regard to its actual truth or logical consistency.”