[dasil003]

> None in principle, at least if you take the common definition of bullshit as saying things for effect, without caring whether they're true or false.

Maybe splitting hairs, but I’d argue that the bullshitter is reasoning about what sounds good, and what sounds good needs at least some shared assumptions and resulting logical conclusion to hang its hat on. Maybe not always, but enough of the time that I would still consider reasoning to be a key component of effective bullshit.