Forensics Padlet by Christian Saparata

3 Errors were made by Agent Oakes

csaparata0523 — 2025-01-06 17:04:28 UTC

1) Microscopic hair analysis could not scientifically distinguish one individual to the exclusion of all others.

2) Statistical weight could not be given to comparisons to suggest a likelihood that the hair derived from a specific source.

3) Expert witnesses should not cite the number of hair analyses they had conducted in the lab to bolster the idea that they could definitively state that a hair belonged to a specific individual.

At least 35 defendants received the death penalty, 33 of which were the subject of false FBI testimony. Nine of the prisoners were executed and five died from other causes on death row.

csaparata0523 — 2025-01-06 17:06:49 UTC

The FBI admitted that the foundations of what it called “hair comparison evidence” were scientifically invalid.

csaparata0523 — 2025-01-06 17:07:29 UTC

This is significant because it is a technique that agents had used in hundreds of criminal cases nationwide and spread through the training of state-based detectives potentially through tens of thousands of other cases

Chris Fabricant, the Innocence Project’s director of strategic litigation who is representing Perrot in his ongoing struggle for freedom, called the FBI’s use of hair analysis a “mass disaster” for the criminal justice system.

csaparata0523 — 2025-01-06 17:08:25 UTC

Microscopic analysis of hair – the very analysis that put George Perrot and so many people behind bars – is virtually worthless as a method of identifying someone. It can only safely be used to rule out a suspect as the source of crime-scene materials or in combination with the vastly more accurate technique of DNA testing.

csaparata0523 — 2025-01-06 17:11:36 UTC

csaparata0523 — 2025-01-07 16:46:24 UTC