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35 lines
2 KiB
Markdown
35 lines
2 KiB
Markdown
---
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type: source
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title: "When AI Writes the World's Software, Who Verifies It?"
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author: "Leonardo de Moura"
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url: https://leodemoura.github.io/blog/2026/02/28/when-ai-writes-the-worlds-software-who-verifies-it
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date_published: 2026-02-28
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date_archived: 2026-03-16
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domain: ai-alignment
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secondary_domains: [teleological-economics]
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status: processing
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processed_by: theseus
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tags: [formal-verification, lean, ai-generated-code, proof-verification, trust-infrastructure]
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sourced_via: "Alex Obadia (@ObadiaAlex) tweet, ARIA Research Scaling Trust programme"
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twitter_id: "712705562191011841"
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---
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# When AI Writes the World's Software, Who Verifies It?
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Leonardo de Moura (AWS, Chief Architect of Lean FRO) argues AI-generated code is proliferating faster than verification can scale. Mathematical proof — not testing alone — becomes essential infrastructure.
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Key evidence:
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- Google: >25% of new code is AI-generated; Microsoft: ~30%. Microsoft CTO predicts 95% by 2030.
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- Anthropic built 100,000-line C compiler using AI agents in 2 weeks for <$20,000
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- "Nearly half of AI-generated code fails basic security tests"
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- Poor software quality costs US economy $2.41T/year (CSIQ 2022)
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Key arguments:
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- Testing provides confidence but not guarantees. "A proof cannot be gamed."
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- AI overfits test suites — Claude C Compiler "hard-codes values to satisfy the test suite" and "will not generalize"
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- Supply chain attacks via poisoned training data can "inject subtle vulnerabilities into every system AI touches"
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- Lean has become the de facto formal verification platform (AlphaProof, 200K+ formalized theorems, 5 Fields medalists)
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- Morrison (Lean FRO) demonstrated AI-generated Lean implementation of zlib with mathematical proof of correctness
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- "The barrier to verified software is no longer AI capability. It is platform readiness."
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Directly relevant to [[formal verification of AI-generated proofs provides scalable oversight that human review cannot match because machine-checked correctness scales with AI capability while human verification degrades]].
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