I hope your last comment was not directed at what I said as i was the only one to refer to Habsheim recently:
"Any way you design flight control software to restrict one thing, somebody will find a way around it. So design must very carefully cater to what is being protected for- i don't think you can ever get it 'right'. Remember the A320 that flew into the trees restricting the pilot inputs because speed was too low to allow a pull up?"
Read it carefully- is there a 'misunderstanding' there. The Airbus has more 'protection from pilots' features than any aeroplane flying. Sure enough, no pull up was allowed by the system (quite correctly as a stall would have been the immediate result). So a crash ensued. But Habsheim is not the issue here- that reference was to answer a query of 'why can't everything that can go wrong be catered for in system design' query.