When I was coming up the stages of development for most bass players I knew were all over the map. Some people stay in one stage for several years, while others resemble prodigies.
1. Absolute noob. Has not yet learned that he doesn't know what he doesn't know.
2. Knows just enough to impress people who don't know any better, but manages to act self-confident, nonetheless.
3. Begins to amass a collection of songs that can be played - along with a recording - without making too many mistakes.
4. Has been asked to join a band comprised of other musicians at roughly the same skill level, the implicit purpose of which is "to get gigs."
5. Has survived long enough to become curious about the training, knowledge, and skills demonstrated by their bass heroes.
6. Has learned major scales, the cycle, the rudiments of intervallic relationships, and is getting more gigs.
7. Ears have developed well enough to quickly and easily hear the changes; begins to make solos sound deliberate and thoughtful. Getting better gigs.
8. Can sight-read standard notation, and understands music theory well enough to transcribe parts and charts. Starts to dabble in arranging.
9. Teaches college-level music
10. Has earned a reputation as a first-call bassist for recoding gigs.
11. Plays, writes, and arranges for living.
