The sand stones had fragments of charcoal on some surfaces but found no recognisable fossils.
But when you are embodied in a location, in a physical plant, in a set of people, and in a common history, that constrains your evolution and your ability to evolve in certain directions.
No experience is a cause of success or failure. We do not suffer from the shock of our experiences, so-called trauma - but we make out of them just what suits our purposes.

