Before revision:  To establish a proper foundation for technical research on this emerging subject, it is important to first research the perception of stakeholders , misconceptions around NDE, the value proposition of NDE 4.0 , the challenges and opportunities, and even outline a process to pursue it.
After revision:  To establish a proper foundation for technical research on this subject. It begins with qualitative research on twenty different perceptions of stakeholders and misconceptions around the current state of NDE. The interpretation is used to define ten value propositions or use cases under "NDE for Industry 4.0 , the challenges and opportunities, and even outline a process to pursue it.