Once again, I apologize : I fell in the trap made by confiture and friends : letting myself get involved in a silly argument.
I realised that other forum members would be interested in the link -the University of Bielefeld- I alluded to.
This document is very interesting because the researchers come out with a sieve to filter the facts that appear in an accident investigation. They call it the WBA, acronym for "Why-Because Analysis".
At the bottom of these 17 pages, the pruner will find more links to other doctoral research.
Here it is :
Lewis WBA
There is more but the site is well made, it's up to you to find out.
Regards to all