"Literature on criminal behavior indicates that the vast majority of rage killings are perpetrated by someone known to the victim."How does someone learn Literature ?
Fatima, forgive me, but I don't understand your question. A person who reads a great deal about a wide array of subjects, including books about criminals and crime, will pick up a lot of knowledge. It will still only be a layman's level of knowledge, not a forensic or law enforcement professional's level, but it would be more extensive than the average person who isn't as widely read.
Hope that's what you were getting at.