Comment by __mharrison__

My anecdotes for using LLMs to modernize legacy (20-year-old systems):

- 40x speed improvement

- Painless env setup

- 20 Second deploy

- 90+% test coverage

- Ability to quickly refactor

- Documentation

(The original system that I wrote with one other programmer 20 years ago took 1.5+ years to write. Modern rewrite: 2 days)