Yea. It's a way to introduce the concepts but only goes so far. None of these carbs are sucking fuel directly from the bowl. Both the air and fuel is coming through a series of restrictions. Furthermore the air, when properly introduced, reduces the density of the liquid fuel - hence the description of it as an 'emulsion'. Pretty much covered this in previous discussions about killbleeds and too many/too large e-holes in the more recent generation of 4150 and 4150 based carbs.
