I dunno, I don’t think that “lessons” is the reason to read Nabokov. Don’t kill someone who you think looks like you to get away with some complicated and arcane scheme? Don’t marry a repulsive-to-you person just to date their child? These don’t seem like lessons that the vast majority of people really need.
The three major hindrances to IRL USA cops investigating crimes via DNA are facilities, funds, and lack of concern. You’d think they could fix the funds part, but too much money is going to ammo and donuts.
I remember an article in the New Yorker, right around when CSI was at its peak, investigating how an actual crime lab in NYC worked. The general answer, as you suggested, is “not at all like that.” No money for tests, and even if a CSI person finds three molecules of a blue sweater AND can run tests that show the alleged killer owned a sweater of that same material, the chance of that being allowed at trial as real scientific evidence is slim.
I mean, I know how it breaks down here in the US because I’ve spoken to actual lab techs, but I’m still curious to know if there’s more interest in the follow-through in European countries.
I suspect it varies widely, but in a lot of cases, it might still come down to similar-but-localized facts: Resources are devoted based on local standards of attractiveness, wealth, and whether or not the victim is [insert “correct” race and/or social caste for the location].
A weird thing about this terrible story that no one seems to have noticed is that these women don’t look anything alike, let alone being “doppelgängers.”* (Or maybe they do to most people. I think I’m a super-recognizer. I can pick out any old person from their baby picture, for example, and I’ve never in my life seen identical twins that were truly identical.)
*Ooh, autocorrect put a li’l Motley Crue thing over that word! … But didn’t in Motley Crue.
The Coen Brothers capture the essential truth that most criminals are not smart people. The ones who go unpunished owe their impunity more to good fortune than innate genius.
I feel though that the Coen Brothers would probably have looked at this case and said “No, this one’s just too dumb, we’re not touching that.”
You’d be surprised how much of an overlap between criminal and idiot there is. Not always, and it’s not to say that all criminals are stupid, but there’s definitely a lot of crimes that are solved by pretty obvious lapses.