Truth be told, the four-letter word LIFT is a lot more complex than we are taught in flight training. This, perhaps, is what prompted a retired Naval aircraft hydraulic and pneumatic mechanic to write a two-page letter saying that all the current theories of lift are wrong. Having worked professionally with both fluids and air, he felt that outside of closed environments they “do not behave alike.” He advocates that airflow is irrelevant, and it’s all about pressure.
Source: general aviationQuestions from the Cockpit: Can someone give me a lift?