In addition to the specific case, the article has a history of prosecutors withholding evidence and the laws related to that. It's been very bad, but recently, some prosecutors have been supporting broad disclosure, a requirement that *all* the evidence be shared.
I'm not convinced that this will be enough, though it seems like a good idea.
I think great deal of the problem is the adversarial approach to trials. It seems unlikely that Americans will give up the prosecutor vs. defense system, so I propose adding a third person to trials who's not allied with either side-- their job is to repeatedly address the question of whether the arguments make sense.
Zande Myrande wrote up a beginning of a trial which includes a third advocate-- this may make the idea clearer.
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