That's related to Frankfurt's definition of bullshit[0]. If you purposefully say something that's not true, you're lying, but if you don't care at all whether what you say is true or not, you're bullshitting.

Complexity seems indeed very good at enabling bullshit - bullshitters caught spreading lies can just plead ignorance and point towards complexity.

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[0] - https://en.wikipedia.org/wiki/Bullshit#Harry_Frankfurt's_con...