[Maharlika]

Originally Posted by C Elegans

There's no such thing as a profile of anything, but there are risk factors. Known factors that will increase the risk for individuals vulnerable to these kind of disorders, just as smoking is a known risk factor for lung cancer for certain individuals, and cannabis is a risk factor for development of psychosis disease for certain individuals.

Known risk factors include a lot of things that are possible to influence at least partly, such as social competence, coping style, depression, tendency to respond with aggression, erranous self-view blaming others for misfortunes etc.

Know protective factors include positive social relationships and committment and successful acheivements in school.

Provided with a perfectly working social protection network including all relevant levels in society (family, friends, school, counselling, psychiatric care etc) we could probably never stop 100% of these acts but surely 99% or even 99.9%.

Indeed. It is how these risk factors are present in each individual is what is needed to be analyzed, hence a need for Threat Assessments in school. We got gun enthusiasts and gamers in our school yet they were not classified as "high-risk." Now, if there are disturbing signs that these risk factors are pointing to that "danger" direction, then the Threat Assessment should be elevated to a Threat Investigation involving law enforcement agencies, especially if there are evidences that a doable and detailed plan coupled with verifiable procurement of dangerous weapons/explosives are present.

Here is another post of mine which complements what CE is trying to point out.