The original title is about institutional knowledge loss when senior engineers leave. Let me rewrite this as a punchy mobile feed headline.

Short summary

Senior engineers accumulate institutional knowledge about why systems are built a certain way—flag defaults, retry logic, API choices. Documentation fails to preserve this because it's a present cost for a future benefit humans avoid. Capture critical decisions where they're made, including rejected options, so AI agents and future team members can access that knowledge when senior engineers leave.

• •Senior engineers hold undocumented knowledge about critical system design decisions
• •Traditional documentation fails because it's a present cost with deferred benefits
• •Capturing decisions at the moment they're made preserves institutional memory for AI agents and future team members

Generated with AI, which can make mistakes.