The Part of Andrew Ng's Skills Map Worth Reading Closely Is No. 4: Engineering Work Is Moving Upstream, Toward the Spec

Andrew Ng's AI engineering skills map lists four abilities, and the fourth deserves the closest read: he argues coding agents are getting rapidly better at delivering to spec, so engineers' work is shifting toward deciding what goes into the spec. gu-log pushes further: once implementation gets cheap, what does a wrong spec cost, which decisions can't be undone, and does your company's process even leave engineers room to do this?

Cognitive Debt: AI Wrote All Your Code, But You Can't Understand Your Own System Anymore

Technical debt lives in code, cognitive debt in your brain. As AI writes 80% of code, system understanding drops to 20%. UVic's Margaret-Anne Storey, Simon Willison, & Martin Fowler confirm this isn't a hypothetical future—it's happening now.