Board Thread:General Discussion/@comment-186.91.159.15-20140728161236/@comment-5278765-20140809142844

That makes sense. Your lines are good lines. Some people think the show "tanked" after certain seasons and draw their lines based on that. I don't think the show ever tanked, but there are different eras. 1-3 is their intern year. 4-5 is second year (and Lexie's first year). 6-8 is the rest of their residencies. 9 starts them being real grown-ups (and starts the internships for the new set.