Because pretty much all Best of Albums are compilations of the Artsit's PREVIOUSLY RELEASED material. Now, why would Ced not release 24 Gone and GWGITG? Both of those songs were sicc as fuck, and there's no reason that he would have just left them lying around for all those years. They had to be on a comp or a single.
I read somewhere here along time ago that Sicc Wit Shit was supposed to be on SEASON but for some reason or another was not included. GUESS WHATS GROWIN, I can understand why it wasnt put on Setrippn or Season, but as an unreleased track its cool.
there is a reason some shit ain't released it ain't because they holding on to it for a greatest hit album.................it's because a song does every so often turns out WACC