Do you think that Scientist can ever help evil people? It may be possible. We just aren’t close enough to it yet. It would take doing extensive research and tests on those that commit these crimes in order to discover a solution.
This would require gathering facts about upbringing, habits, and medical tests. It can be difficult to gather this information. The guilty aren’t always willing to cooperate.
Is there a way for us to prevent people like this man in Colorado from wishing to kill? We don’t know what this man’s motive was yet. Each case like this needs to be looked at individually before it can be grouped into a subset.
What role can society play? That depends on a lot of factors. In most of the cases where someone is found to be guilty in the first degree, be it of a mass murder, serial killing, or just one instance, it is common for someone who knew the killer and/or victim to step up and say, “This doesn’t surprise me.” They might have tried to intervene. They are often weighed down with the self-guilt of “What if I had just…?”
I wish we could find way to prevent evil people. How? I suspect that the vast majority of people, including some of these killers, wish the same thing that you do. Some who have been found guilty have been open about their thought process. A few have even donated their bodies for research once they are dead. Of the cases that I’ve read about, I don’t recall any coming up with a physical or chemical conclusion. Most seem to be based upon upbringing, e.g., environment, development, and relationships.
So, back to the How (do we prevent this)? It would probably take a Utopian environment to stop it entirely. Has any society been able to accomplish that yet? If so, then it would be worthwhile to study what they were doing right and copy it.
In the meantime, it would require stricter regulations on many factors. Who is qualified to be a parent? Who can own a gun or any type of weapon? Should there be psychological testing done on everyone? The list goes on and on. If regulations are put into place for every circumstance, then it becomes an overwhelmingly restrictive environment. This might cause more harm than good.