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In the US it's closer to 93%Yeah, you have no understanding of the systems you are talking about, nor any understanding of the numbers you are copy-pasting. You are comparing apples to oranges. The United States federal conviction rate, when measured using the same metrics as the Japanese conviction rate, is ~99.6% [0]. Read the Pew Research article Fewer than 1% of federal criminal defendants were acquitted in 2022 to understand why [0].
The Japanese system is structured so that prosecutors do intense filtering before indictment. In Japan, prosecutors decide to indict in fewer than one-third of referred cases. Approximately 65-70% of cases are dropped before formal charges are filed. After charges are filed, post-charge dismissals are extremely rare (0.026%) and only occur in extraordinary cases. The post-charge dismissal rate is essentially zero.
By contrast, the United States federal system filters less aggressively before indictment. It allows 83% of referred cases through to indictment. It then filters again, and drops 8.2% of charged defendants after charges are filed, in post-charge dismissal.
The United States system has post-charge dismissals, and the Japanese system does not. These are fundamentally different systems, and cannot be compared directly. To make the systems comparable, US post-charge dismissals should be counted as pre-charge dismissals like they would be under the Japanese system. Then the metrics can be compared equivalently.
When measured on the same metric (acquittals as a share of all formally charged defendants), the gap between the two systems disappears. Japan's acquittal rate is approximately 0.1%. The US federal acquittal rate is 0.4%. Both are under 1%.
> "sometimes we get the wrong guy, then let him go" and "we literally never make a mistake"
This claim demonstrates no understanding of the Japanese legal system. Approximately two-thirds of cases in the Japanese legal system are dropped before charges are filed. This is what happened to the woman in the submitted article, there was not enough evidence to prosecute, so the charges were dropped. Japan's rate of dropping charges is far higher than in the United States legal system, where only 25% of cases are dropped pre-charges, and another 8% are dropped post-charges. The US system only drops one-in-three cases. Japan drops two-in-three cases. Comparing the two systems, Japan prosecutes half as many cases as does the United States, on a per-case basis.
The irony is, Japan literally falls under your invented category of "sometimes we get the wrong guy, then let him go". Japan lets people go at twice the rate of the US federal system. You're parroting claims without any understanding of the system behind it.
[0] https://www.pewresearch.org/short-reads/2023/06/14/fewer-tha...