After a few astonishing landings made using only thrust for control I believe a software program was developed and tested with success on a jet airliner. It was an old tech a/c. I've not heard the evolution of this software or any introduction into line a/c. How would this thrust control software be modified to FBW a/c where there is no pitch/roll/yaw effect? Given that all future a/c (within 30 years) will be FBW has that technology already been adapted for FBW, or has it been shelved?