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  1. #1
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    Question Locard's Exchange Principle in relation to Caylee

    I came across this today

    Locard's Exchange Principle

    and find it fascinating and I do believe this will be what will be the turning point. (for many people involved)

    http://science.howstuffworks.com/loc...principle2.htm

    There are plenty of sites you can google to look this up but in essence

    Locard's Exchange Principle

    Although Locard's exchange principle is generally understood as the phrase "with contact between two items, there will be an exchange," Edmond Locard never actually wrote down those words in the vast amount of material he produced, nor did he mention anything concerning a principle. Locard, however, did write the following:

    "It is impossible for a criminal to act, especially considering the intensity of a crime, without leaving traces of this presence."

    In other words, Locard believed that no matter where a criminal goes or what a criminal does, he will leave something at the scene of the crime. At the same time, he will also take something back with him. A criminal can leave all sorts of evidence, including fingerprints, footprints, hair, skin, blood, bodily fluids, pieces of clothing and more. By coming into contact with things at a crime scene, a criminal also takes part of that scene with him, whether it's dirt, hair or any other type of trace evidence.
    So what do you believe was left at the scene ?
    And what do you believe was taken from the scene of the crime ?
    And where was it taken to ?

  2. #2
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    the duct tape
    dirt
    the car

  3. #3
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    Dec 2008
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    I'm guessing she left her fingerprints on that duct tape. And we've already seen the decomp evidence in the trunk, so that could be considered what she "took away"

  4. #4
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    Quote Originally Posted by JaneInOz View Post
    I came across this today

    Locard's Exchange Principle

    and find it fascinating and I do believe this will be what will be the turning point. (for many people involved)

    http://science.howstuffworks.com/loc...principle2.htm

    There are plenty of sites you can google to look this up but in essence

    Locard's Exchange Principle



    So what do you believe was left at the scene ?
    And what do you believe was taken from the scene of the crime ?
    And where was it taken to ?


    Hi Jane, I would say a plethra of e*idence was taken from the scene's of the crime, death and disposal.


    We shall see, but in my mind it is what often happens, that the *ictim is gi*en God's grace to speak from the gra*e. I do belie*e that has happened with Caylee. And I say that with all sincerity. xoxox

  5. #5
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    Nov 2008
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    dirt on her boots

  6. #6
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    Great post Jane, interesting Principle.

    Here are a few more theories.

    Fingerprints on/in the bag.
    Trunk fibers on/in the bag.
    Anything residual on the duct tape (fingerprints, KC hair)
    KC hair in the bag.
    All residuals linked only to KC and the A house, no foreign evidence that cannot be accounted for.
    Evidence connecting KC found at TL's (soil, another Caylee hair, etc) since that is where she went immediately after Caylee's estimated time of death.
    Soil at crime scene in car tire treads.
    Evidence still on KC clothing.

  7. #7
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    Jan 2009
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    DNA
    finger prints
    hair
    fibers from Anthony home (mainly from blankets, bath towels or carpets)
    dirt/sand
    plant matter (maybe on floor board of car, bottom of boots, undercarriage of car)
    Something most definitely on duct tape, or at least we hope (teeth marks if she bit the tape to cut it, fingerprints, dna from saliva, fibers, hair, etc.)



    Great thread, Jane! I can't wait to read what all the wonderful and insightful people will post here.

  8. #8
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    Quote Originally Posted by scandi View Post
    Hi Jane, I would say a plethra of e*idence was taken from the scene's of the crime, death and disposal.


    We shall see, but in my mind it is what often happens, that the *ictim is gi*en God's grace to speak from the gra*e. I do belie*e that has happened with Caylee. And I say that with all sincerity. xoxox

    the problem with Locard's Exchange Principle in this case is ...kc is not a stranger and much of that trace evidence can be explained away by the familiarity. However, their is so much circumstancial evidence in this case that a conviction is almost certain.

    ot: scandi, what happened to your "v"
    "Life ain't hard, just get a job and don't kill anybody." by richandfamous

    "Even my moderation is excessive." by richandfamous

  9. #9
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    Locard's Exchange Principle

    Possibly:

    carpet fibers from the A home
    bedding/pillow from Caylee's room
    pesticides/cleaners used in trunk of car

  10. #10
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    Quote Originally Posted by richandfamous View Post
    the problem with Locard's Exchange Principle in this case is ...kc is not a stranger and much of that trace evidence can be explained away by the familiarity. However, their is so much circumstancial evidence in this case that a conviction is almost certain.

    ot: scandi, what happened to your "v"
    That's why fingerprints on the duct tape will be so important.She would have to have direct contact and it can't be explained away.I can't wait to hear what LE got .
    Always ,just my opinion





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  11. #11
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    I think she left a load of "evidence" at the scene... I believe this is why LE immediately secured the house and got a search warrant, before little Caylee's body was even removed from the scene in the woods.

  12. #12
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    Oct 2008
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    Quote Originally Posted by JaneInOz View Post
    I came across this today

    Locard's Exchange Principle

    and find it fascinating and I do believe this will be what will be the turning point. (for many people involved)

    http://science.howstuffworks.com/loc...principle2.htm

    There are plenty of sites you can google to look this up but in essence

    Locard's Exchange Principle



    So what do you believe was left at the scene ?
    And what do you believe was taken from the scene of the crime ?
    And where was it taken to ?
    jane found this interesting...immediately upon reading three answers came to mind:
    1. left responsibilty (i.e., Caylee)
    2. "freedom"
    3. bars, tonEs and everywhere else so she could party like a rock star...
    jmo

  13. #13
    Join Date
    Dec 2008
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    884
    So what do you believe was left at the scene ?
    -Casey's finger prints, hair, or other DNA on the duct tape
    -Any kind of clothing or accessory (such as sun glasses or jewellery) of Casey's that has been "missing" since mid-June
    -finger or foot prints, DNA or hair, on the ground, on tree trunks, or anywhere else close to Caylee's remains
    -any material also found at the Anthony home, bedding material, plastic bags, tape etc...

    And what do you believe was taken from the scene of the crime ?-
    -Soil, dirt, flora etc from the location, on the soles of her shoes
    -Same on her hair, under her finger nails and on her clothes, but she probably washed all that the same day or the day after...
    -Particles on any item found in the car, apart from what was found in the trunk

    And where was it taken to ?

    -Anthony's house, the car, Tony's house, wherever else she put her shoes the next couple of days

  14. #14
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    Nov 2008
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    Thanks for all the compliments

    In regards to familiarity he has even covered that in regards to a example given on that above link Back in 1912 !!!


    Dr. Locard tested out this principle during many of his investigations. In 1912, for instance, a Frenchwoman named Marie Latelle was found dead in her parents' home. Her boyfriend at the time, Emile Gourbin, was questioned by police, but he claimed he had been playing cards with some friends the night of the murder. After the friends were questioned, Gourbin appeared to be telling the truth.

    When Locard looked at the corpse, however, he was led to believe otherwise. He first examined Latelle's body and found clear evidence that she was strangled to death. He then scraped underneath Gourbin's fingernails for skin cell samples and later viewed the results underneath a microscope. Very soon, Locard noticed a pink dust among the samples, which he figured to be ladies makeup.

    Although makeup was popular around the time of the murder, it was by no means mass produced, and this was reason enough for Locard to search a little further. He eventually located a chemist who developed a custom powder for Latelle, and a match was made. Gourbin confessed the murder -- he had tricked his friends into believing his alibi by setting the clock in the game room ahead. Locard's exchange principle had worked.
    In regards to Scandi's V it broke LOL

    In my first post you will note that I said

    "and find it fascinating and I do believe this will be what will be the turning point. (for many people involved)"

    And then asked what was taken What was left etc

    Ie not just referring to Casey's involvement but to anyone else that went there


  15. #15
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    Jun 2007
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    This may not relate to the actual crime scene. But I've always thought the dogs hit in the backyard either: from GA sitting the cans down and maybe washing them off as he made his way back to the shed. Or the possibility of toys and such being removed from the car and being placed back into the playhouse or sandbox.

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