After reading the Ark Projects part, I still don't have a full grasp on every detail. The uestion is:
How long does it take to complete a project if the PC's aren't in the Ark? Should I as a GM make a roll at the end of the session (or beginning of next session) for how much has progressed on the project? I know that PC's can each roll to build on a project once a session, but projects should naturally progress by the denizens of the ark anyway. right?