Yes, I should've been more explicit: It's evidently problematic to use jargon from one field in another field. "Stable" has a common sense definition, and has a

Yes, I should've been more explicit: It's evidently problematic to use jargon from one field in another field. "Stable" has a common sense definition, and has a meaning in IT that's fairly close to that common sense definition, but has a meaning in aerodynamics that's much more specific. A lot of confusion in this thread resulted from a mixing of those definitions. That's the point I tried to humorously make above.