| Yes, but you never know who's going to do what until it's too late... almost all the time, this is the case.... most all have jobs, friends, family, seem to be normal people, but you never see what's behind the doors..... It's pretty rare there are things you can see that point to them being a danger..... hell even the school shootings, there's been plenty of talk and records online of their thinking, their reasoning, and yet there was no proof showing they were actually going to go through with anything..... therefore there was no right or position by authorities to arrest someone for commiting a crime they have yet to commit.
And any studying of other killers won't help to detect them, not just because of reasons above of normality..... but most likely you'd have to arrest them and submit them to equal tests to detect a match, unless you plan on doing that to everybody in the country.... that's not going to work.
Studying them seems impractical to me and a waste of time. If they are going to kill someone or rape someone.... then they are no use to society, therefore get rid of them. If you study them, you're just going to prolong that criminals life, make them feel that their important, because they haven't been executed like the rest, and even if you can find more information out of them, you will still find it difficult by law to arrest someone until they commit the crime..... so chances of it actually preventing crimes won't be that much imo. |