How Software Development Changes in the AI Era

TL;DR AI drastically reduces implementation cost, but it does not make software development itself unnecessary. The skills that gain value are requirements definition, task decomposition, design, verification, and deciding what to build. Observing the real world and spotting problems from firsthand experience remains a distinctly human strength. Developers are moving from "the person who writes everything by hand" toward "the person who designs an AI-assisted development system and safeguards quality." Introduction Over roughly the past year, AI-assisted development has clearly entered a new phase. It used to be mostly about slightly better autocomplete. Now it can handle meaningful implementation, refactoring, test additions, and even review support. That shift often triggers extreme takes such as, "Will humans stop writing code altogether?" But when I look at what actually happens in day-to-day development, reality feels more grounded. The cost of writing code has definitely dropped,