if they both did or didn’t autoload there would be no practical difference. but by default every dir under `app/` autoloads, and `lib/` does not. so using app

if they both did or didn’t autoload there would be no practical difference. but by default every dir under `app/` autoloads, and `lib/` does not. so using app/lib is really just a reasonable solution for not breaking the existing defaults and conventions.