Dev Reflections: AI Financial Tools Must Learn to Say 'Cannot Verify'
MuhammadMujtaba21 · reddit · 2026-08-11
An indie developer shared design iterations for an AI financial verification tool. Originally aiming for deterministic verification across all calculations, community feedback highlighted a core flaw: many financial figures involve judgment calls or lack clean source mappings, making a confidently wrong deterministic engine more dangerous than an AI hallucination.
Based on this critique, the developer redesigned the output logic:
- Honest Refusal: The tool now explicitly outputs 'cannot verify' for calculations requiring interpretation or ambiguous sources, rather than forcing a potentially incorrect answer.
- Boundary Mapping: Determinism is only claimed for calculations with unambiguous mappings (e.g., net leverage).
The developer is actively seeking real-world examples from accountants to better map the boundary between mechanical calculation and human judgment.
Related event: Dev Builds Deterministic Engine to Fix AI Financial Errors(2 posts)→
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