+ Reply to Thread
Results 1 to 9 of 9

Thread: Fingerprints

  1. #1
    Join Date
    Dec 2006
    Posts
    2,753

    Fingerprints

    It is commonly accepted that we all have a unique set of fingerprints, to the extent that this is accepted in science, and in law, right?

    Question...

    How can ANYONE be sure of that?

    The only sure way to know would be if every man, women and child had had their prints taken, and that has never happened.

    So, how can it be said that our prints are definitely unique?

    There could be 100, 1000, or 10,000 people in the world, all with the same prints as you.

    At best it is a theory.

    Thoughts?
    "Ethics" is simply a last-gasp attempt by deist conservatives and
    orthodox dogmatics to keep humanity in ignorance and obscurantism,
    through the well tried fermentation of fear, the fear of science and
    new technologies.
    There is nothing glorious about what our ancestors call history,
    it is simply a succession of mistakes, intolerances and violations.

  2. #2
    Join Date
    Oct 2006
    Posts
    4,548

    Re: Fingerprints

    No clue. Pardon the pun. But I know nothing about fingerprinting.
    The terminally stupid and certifiably insane.

  3. #3
    Lord_jag's Avatar
    Lord_jag is offline I am God because I say I am. Prove me wrong. User Rank
    Join Date
    Sep 2006
    Posts
    2,796

    Re: Fingerprints

    To answer this fully, you would need to talk to someone that studies fingerprints. I'm sure any criminal lawyer knows a couple. To the best of my knowledge, we start to develop fingerprints as external forces work on our digits. I seem to recall hearing that even identical twins have unique fingerprints.

    This follows the same idea that no two snowflakes are exactly the same. Fingerprints are incredibly complex. Now we get into the world of crazy/stupid probability. First we have to define what maked them the same.

    Every time your skin peels, youget a new layer of skin on your fingers and your fingerprint moves a tiny bit, but the basic layout of lines stays the same. Criminologists use a series of features on a fingerprint to match. Usually they go for 10-15 features per finger. Either the feature is there or it isn't. One feature missing and that means the print is not a match.

    If you have 10 fingers with say 10 points to match on each, statistically, the chance someone else has the same is 2 ^ 100 or one in 1,267,650,600,228,229,401,496,703,205,376.

    Odds are pretty good that in the 6.5 billion people, noone has the same combination as you.

    It could happen, but it is VERY VERY unlikely - beyond a reasonable doubt, which is good enough for law.

    On the other hand, if there has been on average 100 million people with an average breeding cycle of 10 years (common before 1800s) and people have been around(with similar fingerprints) for oh... say 50,000 years, that gives you 500 billion chances rolls of the dice that someone has ever had the same fingerprints as you do now. Still unlikely.

  4. #4
    Join Date
    Aug 2006
    Posts
    127

    Re: Fingerprints

    It is a statistic issue. The chances of two people having the same fingerprints is veeeeeeeeeeeeeeeeeeeeeeeery low. Because: From Wikipedia "....No two fingerprints have ever been found identical in many billions of human and automated computer comparisons. ......."

  5. #5
    Join Date
    Dec 2006
    Posts
    2,753

    Re: Fingerprints

    Know what?

    Only a matter of time before some redneck comes on and claims that 'Gawd created fingerprints so that the poh-leece could catch the agents of satan'..... :D
    "Ethics" is simply a last-gasp attempt by deist conservatives and
    orthodox dogmatics to keep humanity in ignorance and obscurantism,
    through the well tried fermentation of fear, the fear of science and
    new technologies.
    There is nothing glorious about what our ancestors call history,
    it is simply a succession of mistakes, intolerances and violations.

  6. #6
    Join Date
    May 2005
    Location
    Planet Gong
    Posts
    1,032

    Re: Fingerprints

    "God gave us fingerprints to keep a better grip on our beer."

    Not sure who said that: Ben Franklin, I think.

  7. #7
    Join Date
    Oct 2006
    Posts
    4,548

    Re: Fingerprints

    Quote Originally Posted by dr poormouth
    "God gave us fingerprints to keep a better grip on our beer."

    Not sure who said that: Ben Franklin, I think.

    I'll drink to that. :)
    The terminally stupid and certifiably insane.

  8. #8
    Join Date
    Sep 2004
    Location
    New Zealand
    Posts
    1,736

    Re: Fingerprints

    Quote Originally Posted by dr poormouth
    "God gave us fingerprints to keep a better grip on our beer."

    Not sure who said that: Ben Franklin, I think.
    And a better grip on the trees we used to climb millions of years ago :)

  9. #9
    Join Date
    Jun 2006
    Posts
    5,840

    Re: Fingerprints

    We have footprints too and also TONGUE PRINTS.

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may edit your posts
  •