creator of Claude Code says "coding is solved"
he's right, but only for 0.01% of AI native devs because they drastically changed how they operate
here are the 7 shifts the other 99.99% haven't made yet:
1. behavioral scenario engineering
traditional unit tests don't work in AI-native development - the AI can teach to the test if it sees the codebase while building
you need external behavioral scenarios: specs stored separately as a holdout set, checking whether the app does what a real user needs without letting the AI see the answer key
think less "does this function return the right value" & more "does this flow work for a confused first-time user at 11pm on a sat"
2. architecting digital twin env
to let AI agents run at scale without breaking real systems, you need simulated env built around the actual services your product touches
behavioral clones of Slack, Jira, your database, your payment provider - so agents can run full integration testing in a safe sandbox, any time, without risking real data or real users
almost nobody is doing this yet
3. high-precision articulation
it used to be how fast you could implement, now it's how precisely you can specify
machines don't carry tribal knowledge
so any ambiguity becomes a guess & software guesses compound
the skill is describing a problem precisely enough that an agent can one-shot it without asking a clarifying question
4. AI context architecture
the longer a session runs, the more the AI quietly forgets
context windows fill up, critical decisions get compressed out & it starts contradicting things you established hours ago
the fix is simple and almost nobody does it - maintain markdown files capturing your business context, user context, architectural decisions, constraints, and known failure modes etc
when the AI drifts, you don't re-explain everything. you just point it back to the files
5. legacy archeology
most code in the world is brownfield - undocumented institutional knowledge held together by developers who know which parts you never touch on a friday
getting AI to take over requires reverse-engineering all that implicit knowledge into explicit, machine-readable specs
painstaking work - but really important
6. outcome evaluation over code review
the question stops being "how was this written" and becomes "did this actually work"
that requires genuine trust in your eval framework - enough to approve a feature based on behavioral test passes without reading the diff
most developers aren't psychologically there yet. getting there is as much a mindset shift as a skills shift
7. economic compute management
running a dark factory is expensive
agents running continuously, parallel builds, full test suites firing on every change - this adds up fast
the devs and teams who win at this level manage serious compute spend and design agent workflows that are powerful without being wasteful
and make the economics legible to the people holding the budget