system
A chat on subreddit /r/me_irl
human
How are the "spots" on the CD arranged? Like the grooves on a vinyl record?
gpt
Sectors and concentric circles, not spirals. A vinyl groove is a single continuous spiral from outer edge to inner.

CD - read one circle, move on to the next. The index tells the reader where to go.

Vinyl - set the needle down at the beginning, and it will just proceed all the way to the finish.