[churchill]

But, ignorance predisposes you to stupidity. In the absence of knowledge, you can either admit you don't know enough about a topic to have an informed opinion on it, or, you can cobble together some bullshit, making up stuff as you go.

Since admitting you know nothing takes humility, most (ignorant) people opt to cobble together bullshit. Or accept plausible-sounding cobbled-up bullshit as true.