
REWORK AI Revisited
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Jan 21, 2026 David Heinemeier Hansson, co-founder and CTO of 37signals and creator of Ruby on Rails, dives into AI's rapid advancements. He shares how agent mode has transformed developer workflows and improved productivity by automating mundane tasks. David praises AI for its ability to create usable drafts, helping non-programmers harness technology like never before. He maintains an optimistic outlook on AI's potential benefits, urging listeners to focus on current achievements rather than fear-fueled speculation about the future.
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Agent Mode Transformed Developer Work
- Agentic AI running autonomously in terminals changed David Heinemeier Hansson's developer experience more than autocomplete ever did.
- Agents that run commands, use tools, and act on plans feel less intrusive and more productive than inline completions.
Agents Produce Useful Drafts
- David describes many agent outputs as "80% there," often requiring him to finish or tweak the rest.
- That partial work frequently saves him significant time and changes how he chooses tasks to tackle.
AI Pre-Screens Security Reports
- 37signals used an AI agent to pre-screen HackerOne security reports by scoring reporters and filtering low-signal submissions.
- The system saved review time and let humans focus on high-value reports.



