Perhaps it isn't so surprising that the working industry has difficulties with these concepts, where apparently the academics also have problems in understanding / implementation;-
In particular:-
https://www.dropbox.com/sh/3kdztka0j...Shorrock+2.pdf
All presentations:-
https://www.dropbox.com/sh/3kdztka0j...xtqrOASpa?dl=0
From the meeting;-
https://humanisticsystems.com/5th-in...ll-operations/