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The failure that should worry you about OCR doesn't look like garbled text. It looks like 98% confidence and a missing paragraph.
We built our OCR pipeline as a confidence-routed cascade, benchmarked it against three newer document-understanding tools, then threw genuinely dirty scans at it and watched the safety net fail to catch four real bugs. What we found, and what the current literature actually supports.
No answer is better than the reading it came from.
Before a system can answer questions about your case file, someone has to turn the paper into text. That step is called OCR, it never shows up in a demo, and it decides the quality of everything that follows.