It's not impossible. It's unfeasible. Paying 3 hours of very expensive flight training to obtain 30min of actual flight instruction should be unfeasible at pla

It's not impossible. It's unfeasible. Paying 3 hours of very expensive flight training to obtain 30min of actual flight instruction should be unfeasible at plain sight, but fair enough - the next level of detail is "makes it unaffordable, impractical, and is a strong deterrent for vast majority of interested parties".