I dust this link off occasionally, perhaps it should be more frequent; for everyone.
Black Hole, FMS - altitude / distance cross check, route planning, visual 'map-slip',
These are as much technology, procedure, or airspace complexity related incidents as human. The issue is how and when contributing factors combine; how can we identify those situations - its not training in isolation.
https://www.icao.int/safety/fsix/Lib...plus%20add.pdf