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Thread: see how you could sort out this crime and find the killer

  1. #1 see how you could sort out this crime and find the killer 
    Forum Freshman danacus2's Avatar
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    if someone was the kill another, in an allyway with a baseball bat for example, the killer escaped the scene with no witnesses and no cameras, when he got back, he burnt the bat and the clothes and shoes(cuz of footprints) and disposed of the ash, how would science solve that? if anyone can think of a way to solve that id be pretty shocked xD


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    Forum Freshman +SCIENCEgirl+'s Avatar
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    - saliva he leaves behind on the victim or at the scene
    - epithelium from the killer under the victim's fingernales (there must have been a struggle?)
    - motive
    - dirt/little bugs from his shoes he can leave behind on the scene and maybe it can be traced back to a neighbourhood
    - hairs the killer left behind at the scene or at the victim


    + Don't walk where the path may lead, walk instead where there is no path, and leave a trail...+
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  4. #3  
    Forum Ph.D. Darius's Avatar
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    Ahahaha. He burned his own shoes. This means he left...FOOTPRINTS. Ahahahaha
    Om mani padme hum

    "In dishonorable things we are not bound to obey any man." - The Book of the Courtier [1561], pg 99 (144 in pdf)
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  5. #4  
    Forum Masters Degree samcdkey's Avatar
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    Are footprints unique and easy to identify as shoe prints?
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  6. #5  
    Forum Ph.D. Darius's Avatar
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    They are unique. As for ease of identification, I don't know. I missed that episode of CSI.
    Om mani padme hum

    "In dishonorable things we are not bound to obey any man." - The Book of the Courtier [1561], pg 99 (144 in pdf)
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  7. #6  
    Forum Freshman +SCIENCEgirl+'s Avatar
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    We don't know if footprints are unique until we take them of all the people on earth and compare them .
    Maybe you can measure the depth of the shoe prints and calculate the weight of the person. And of course know their shoe-size.
    + Don't walk where the path may lead, walk instead where there is no path, and leave a trail...+
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  8. #7  
    Forum Ph.D. Darius's Avatar
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    We don't know if pink flying elephants using magical powers don't exist until we observe the whole universe at the same time.
    Om mani padme hum

    "In dishonorable things we are not bound to obey any man." - The Book of the Courtier [1561], pg 99 (144 in pdf)
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  9. #8 Re: see how you could sort out this crime and find the kille 
    Forum Freshman +SCIENCEgirl+'s Avatar
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    Quote Originally Posted by danacus2
    he burnt the bat and the clothes and shoes(cuz of footprints) and disposed of the ash, how would science solve that?
    The best you can do is wear Converse All-Stars. If you're wearing a brand of shoe that isn't sold a lot they can trace you by going by all the shops they sold that shoe with a particular size.
    Think about that the next time you buy a pair of shoes almost no-one has
    + Don't walk where the path may lead, walk instead where there is no path, and leave a trail...+
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  10. #9  
    Forum Freshman +SCIENCEgirl+'s Avatar
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    Quote Originally Posted by Darius
    We don't know if pink flying elephants using magical powers don't exist until we observe the whole universe at the same time.
    you're trying to say..? :wink:
    + Don't walk where the path may lead, walk instead where there is no path, and leave a trail...+
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  11. #10  
    Forum Freshman danacus2's Avatar
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    Quote Originally Posted by +SCIENCEgirl+
    - saliva he leaves behind on the victim or at the scene
    - epithelium from the killer under the victim's fingernales (there must have been a struggle?)
    - motive
    - dirt/little bugs from his shoes he can leave behind on the scene and maybe it can be traced back to a neighbourhood
    - hairs the killer left behind at the scene or at the victim


    what if he was smart, and he did not leave saliva and had a balaclava on, and if it was a sneak up behind kill (no struggle) and to the hairs, well if your fully clothed that would not be possible


    any other ways you could figure this one out?
    but very good points above!
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  12. #11  
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    that, my friend, is the perfect crime.

    Except for one thing: He'll leave a thermal signature in the air that can be traced as he walks home.
    I had a simple dream: a dream to kill all humans, and this is how you repay me?
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  13. #12  
    Reptile Dysfunction drowsy turtle's Avatar
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    Quote Originally Posted by Darius
    They are unique. As for ease of identification, I don't know. I missed that episode of CSI.
    I did some work experience in a forensic lab, and it is commonplace for delinquents to remove their socks and shoes and use their socks as gloves to avoid leaving fingerprints, only to be identified by their footprints.

    The print made by shoes is also fairly useful for identifying the guilty person, as scratches, stones and wear are different for every pair. footprints leading to a place where there has been a fire, then leading away barefoot, would be a fairly clear sign. Mus and sediment from where the shoes were burned would then be possible to find in the persons home, for instance in the shower.
    "The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." ~ Douglas Adams
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  14. #13  
    Forum Freshman danacus2's Avatar
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    point is though drowsy, how are they going to find the 'suspects' home in the first place if they dont know who to suspect?
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  15. #14  
    Reptile Dysfunction drowsy turtle's Avatar
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    Quote Originally Posted by danacus2
    point is though drowsy, how are they going to find the 'suspects' home in the first place if they dont know who to suspect?
    Footprints leading away from the scene, find out who bought a weapon fitting the wound size and shape recently, samples of mud left behind revealing where the murderer has been recently. Many ways.
    "The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." ~ Douglas Adams
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  16. #15  
    Forum Masters Degree Numsgil's Avatar
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    Also from a practical point of view, you don't have to have physical evidence to get convicted. Though it's increasingly less common because of the "CSI effect", juries have been known to convict based on circumstantial evidence alone. Like someone with a motive and no alibi and various other circumstantial evidence.
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  17. #16  
    Reptile Dysfunction drowsy turtle's Avatar
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    Basically, there's no such thing as the perfect crime. The best you can hope to manage is being better than the forensic scientists in your area.
    "The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." ~ Douglas Adams
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  18. #17  
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    Hey danacus, who did you kill?
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