I think that every child grows up with the ideas that what we are given, is our society. Your education, and your mother and father, they tell you this is how it is, but then you hit adolescence and you think, 'Is it? Why? Why is it like that?' Sometimes that questioning leads to something more.
The same expertise we learned at the autopsy table can be applied to living people who've been shot, battered, or raped. The search for trace evidence is the same.