Why are good developers so wary of agentic development?

Rachel Laycock, CTO at Thoughtworks, explains that good developers are cautious about agentic development because they understand that built code is not the same as code that works in production. She notes that many excellent developers, who typically embrace new tools and practices early, have been hesitant to fully adopt coding agents, and she explores the underlying fears behind this reluctance through discussions at Thoughtworks' Technology Radar open space sessions.