There are some semantic debates going on in this thread about the term "bullshit". But there is a clear definition. The paper Stallman links to uses bullshit in the Frankfurtian sense, that is, talk without care for the truth:
> The liar, Frankfurt holds, knows and cares about the truth, but deliberately sets out to mislead instead of telling the truth. The "bullshitter", on the other hand, does not care about the truth and is only seeking "to manipulate the opinions and the attitudes of those to whom they speak"[0]
> The liar, Frankfurt holds, knows and cares about the truth, but deliberately sets out to mislead instead of telling the truth. The "bullshitter", on the other hand, does not care about the truth and is only seeking "to manipulate the opinions and the attitudes of those to whom they speak"[0]
[0] https://en.wikipedia.org/wiki/Bullshit#Harry_Frankfurt's_con...