That's a silly and highly unscientific definition that there is no way of demonstrating outside of "just so stories". Oh, someone had an experience and afterwar

That's a silly and highly unscientific definition that there is no way of demonstrating outside of "just so stories". Oh, someone had an experience and afterwards have symptoms - it must have been trauma. There is large heterogeneity in the reaction of individuals to the sane exact experience, and sometimes what initially appears damaging ends up doing the opposite.