case: (Default)
Case ([personal profile] case) wrote in [community profile] fandomsecrets2023-04-29 04:52 pm

[ SECRET POST #5958 ]


⌈ Secret Post #5958 ⌋

Warning: Some secrets are NOT worksafe and may contain SPOILERS.


01.



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02.



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03.
[Succession, Roman Roy]



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04.
[minecraft youtube?]



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05.
[Green Hell]



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06.
[Lost Ruins]
























Notes:

Secrets Left to Post: 02 pages, 30 secrets from Secret Submission Post #852.
Secrets Not Posted: [ 0 - broken links ], [ 0 - not!secrets ], [ 0 - not!fandom ], [ 0 - too big ], [ 0 - repeat ].
Current Secret Submissions Post: here.
Suggestions, comments, and concerns should go here.

(Anonymous) 2023-04-29 11:32 pm (UTC)(link)
Well, I guess it depends on how much you trust DNA testing. The process uses databases of user-submitted genetic samples to find a related match to a sample taken from the crime scene. For example, maybe the murderer who left their DNA on the victim isn't in the database, but their third cousin twice removed might be. So by that process, they can narrow it down to a family... then a branch of that family... then you can check birth/death records, social media, etc. and find out all the living members who might be 1) male 2) the right age 3) known to be living in the area where the murder occurred. THEN you chase down that potential suspect and take a fresh sample of their DNA and run it against the crime scene DNA.

(Anonymous) 2023-04-30 12:18 am (UTC)(link)
This. "Handwriting analysis" was always qualitative. DNA analysis is quantitative. And if you accept that DNA evidence is reliable, then all genetic genealogy does is give you a larger pool of DNA samples to compare your crime scene evidence against.

(Anonymous) 2023-04-30 12:25 am (UTC)(link)
I don't think there is any evidentiary process that American police can't find a way of fucking up, whether through malice or incompetence
philstar22: (Default)

[personal profile] philstar22 2023-04-30 12:32 am (UTC)(link)
Entirely accurate. But the fucking up version of DNA testing usually is one of two things: 1. A lab tech deciding to make police happy by finding false positives or 2. police refusing to test or hiding or lying about the results.

(Anonymous) 2023-04-30 01:17 am (UTC)(link)
And let's be real. Number 1 is less "lab tech decides to make police happy" and more "police offers lab tech financial or other compensation to find false positives," because if lab tech gets caught out they've destroyed their career and are also going to jail when the police department throws them under the bus. And given that the bulk of DNA analysis done by crime labs is still connected to sexual assault cases, the police are typically less incentivized to bribe DNA analysts than, for example, drug chemists.
philstar22: (Default)

[personal profile] philstar22 2023-04-30 01:19 am (UTC)(link)
Yes to all this.

(Anonymous) 2023-04-30 02:02 am (UTC)(link)
Admittedly, all of this sounds like the premise for an intriguing movie.

(Anonymous) 2023-04-30 01:43 am (UTC)(link)
But as I understand it, "user-submitted genetic samples" doesn't mean the samples come from people who intended to donate them to a policing database. It's people using DNA testing services like 23AndMe out of personal curiosity, but then the cops are given access.

There are major ethical/privacy issues that I wouldn't trust a TV show to handle well. It would just end up being more copaganda.

(Anonymous) 2023-04-30 02:06 am (UTC)(link)
Most of the companies like 23andMe don't actually cooperate with law enforcement; you usually have to voluntarily submit your data to one of the few that does (like GEDMatch) and for most of them even then you have to actively opt-in to the law enforcement search. So the individuals that match usually have actively chosen to donate to police.

The issue is that just because Aunt Karen consented to helping the cops doesn't mean that Uncle Bart did, but Aunt Karen's DNA matching is close enough to let anyone who wants to find Uncle Bart, and with genetic genealogy even Third-Cousin-Twice Removed Egbert is.

(The other issue is government trying to force sites like 23andMe to share data whether they want to or not.)

(Anonymous) 2023-04-30 11:29 am (UTC)(link)
Given 23andme's historical issues with data privacy and communication of how they keep said data private, I can see them buckling on this one really quick.

https://d3.harvard.edu/platform-digit/submission/23andme-losing-at-digital-privacy/