| http://www.w3.org/ns/prov#value | - IIRC DD didn't try to hog away the ramp (which should be left mostly in place to retain the swirl); my guess is that he removed the part of the ramp he is visible thru the intake port, which helps airflow on the outside wall area -- where most of the airflow is anyway, AND he probably smoothed the ramp end to allow some intake flow along the inside port wall.
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