The question is about causality in scientific terms.
Is wake turbulence a byproduct of the process in which high-velocity air moves across an airfoil (mainly the wing, perhaps) to produce lift?
Or, is wake turbulence simply a coincidence of the fact that the aircraft is lifting?
Is it an effect or a coincidence of flight, that’s the question.
The followup question is – if it’s an effect, is it due to the phenomena as described in the explanation provided by Bournoulli’s principle, or is…