The OMG amateurs don't build airplanes. But airplane engineers use those amateur's spec to build airplanes. I'm flying less frequent these days.
Just to be clear I was talking about ArchiMate Standard by the Open Group and how it lacks robustness and consistency. Nothing to do with OMG or its specs. Point was there was a lack of quality that wouldn't be tolerated in some areas.
FYI - Aircraft engineers use ISO/ IEEE /AS/ MIL-Q etc standards to build aircraft so rest assured air travel is still the safest form of travel and they ARE PROFESSIONAL ENGINEERS who design and build them.
Notations like UML, SysML etc may be used to design along with some formal methods to meet safety critical needs as well as comprehensive testing to validate.
Worked in aviation industry for 9 years where I designed and built avionic systems so had first hand knowledge of it all.
But alas we drift off topic so lets call it a day.