Expired85% confidenceFactExact time
A classic IBM study shows that if defects introduced during the requirements phase are not discovered until the coding phase, the cost of fixing them is 6–10 times higher.
5
Sources
85%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
5 Daily Claude Code Tips: Let AI Interrogate You Instead
bilibiliAI工具实测6/15/2026
Related Claims
UnverifiedResearch by Barry Boehm shows that if errors introduced during the requirements phase are not discovered until after coding, the cost of fixing them increases by a factor of 10 to 100.77% similarUnverifiedIBM Systems Sciences Institute 研究数据显示，设计阶段修复缺陷成本为1x，编码阶段6.5x，测试阶段15x，生产环境100x75% similarUnverified研究显示修复嵌入架构深层的性能问题成本是在设计阶段预防的6至10倍72% similarUnverifiedResearch data from IBM and NASA shows that fixing a bug discovered during the requirements phase costs 10x to 100x less than fixing it during coding or testing70% similarUnverifiedThe cost of fixing vulnerabilities grows exponentially as development progresses, with the cost of detection and remediation during the coding phase being far lower than during the testing phase or in production.67% similar
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