When you've had a world that you built, by 'hand', with help from others that spans over many,many millenia that goes from Science Fantasy to Medieval Fantasy and back. Culture,language(really just borrowed because lazy at the time),military organization, map building, pantheon building, history building....All of it. and now I look at it, and I see many inconsistencies...and I want to right that wrong. but since I started so late in it looks very hard to actually start and I don't want to give up on this setting. It tears at me! It's been annoying me the last few days that I can't figure out where to start!