Many things are omitted from accident investigations.  It depends upon waht level of the abstraction ladder that you live on. 

Think of the EARTH universe has a  SYMBOL/ concept office building with the 11 floors  …. as suggested by the 11 dimensions of  information string theory physics.  You  live and work on one of those MENTAL levels.

Thru hard thinking and studying …you can access other levels. That require efforts  and  math and science textbooks.

The SYMBOL MACHINE is comprised of English language words and concepts, math and physics equations, biochemistry diagrams, electromagnetic sin wave schematics, etc.   The SYMBOL MACHINE equivalent are basic college textbooks in math and science  that may be found in any  bookstore  or a bookstore near a university.

We are reminded of …… 

Language in thought and action – S. I. Hayakawa – Google …

books.google.com › Language Arts & Disciplines › Linguistics › General‎

A revised, updated edition of S. I. Hayakawa’s classic work on semantics. He discusses the role of language, its many functions, and how language shapes our … …. Semantics is primarily concerned with meaning and reference, i.e. what Hayakawa calls the relationship between the «map» and the «territory» …

Maps and Territories – Rijnlandmodel

Language in Thought and Action, S.I. Hayakawa.
Chapter 2 Symbols Maps and Territories
There is a sense in which we all live in two worlds  … ask Nelson at University of Wisconsin  …. and his EARTH Language link via the living EARTH cell to Nelson Mandella , the Wisconsin Dells, Base 16 hexadecimal highway Wisconsin,  and Base 16 South AF HEX code of South AFRICA.