The difference is AI tooling lies to you. Day 0 you think it's perfect but the more you use ai tools you realize using them wrong can give you gnarly bugs.
It took me a couple of days to find the right level of detail to prompt it. Too high level, and the codebase gets away from me/the tooling goes off the rails. Too low level, and I may as well do it myself. Maybe also learn the sorts of things Claude Code isn't good at yet. But once I got in the groove it was very easy from there. I think the whole process took 2-3 days.
It took me a couple of days to find the right level of detail to prompt it. Too high level, and the codebase gets away from me/the tooling goes off the rails. Too low level, and I may as well do it myself. Maybe also learn the sorts of things Claude Code isn't good at yet. But once I got in the groove it was very easy from there. I think the whole process took 2-3 days.