My guess is that IBM believes the software works according to specification. And maybe it does. Maybe the specifications are wrong. Most likely, it's a combinat

My guess is that IBM believes the software works according to specification. And maybe it does. Maybe the specifications are wrong. Most likely, it's a combination of bad specs and programmed logic errors that don't always follow the specs that are correct. Of course, this requires testing and time to hash out. It would be a major mistake to scrap a project in it's final phase of refinement. They should have switched over slowly, department by department, handling and resolving issues along the way. But scrapping the entire project now only means another $1B investment and repeat down the road. Trudeau would join the ranks of the FAA in flushing multi-billion dollar software projects. It's a waste. I don't know about this project, but software engineers died on-the-job working on the FAA's AAS that never launched.