Lying is different from bullshit.
When you lie, you know what the truth is but you intentionally misrepresent it. In a way bullshit is more insidious because people who bullshit often don’t know what the truth is and don’t care.
They’re out to make a point; they’re out to sell you an idea; and they really don’t care whether what they are saying is true or not.
The Golden Age of Bullshit by Bob Hoffman