Re: Expedition with no cards played on it scores "0" not "-
1. Does that simply mean if you do not start off an expedition in a colour you score 0 for that colour (sort of obvious I would have thought!)?
This is how I think about it when playing: Your goal is to make the most cash from your expedition, right? So if you start an expedition then you've already put some of your own cash into, like 20. You need to make that back. You're twenty in the hole.
But the killer is if you throw an investment card in there. If you put one investment card and no other cards then you have to multiply your -20 by two because the same rules apply. Meaning, if you put an investment down and nothing else you score -40 for that color. But it gets worse. If you have two or three investment cards and nothing else, then you score -60 and -80 respectively. (Remember, investment cards multiply your initial score by the number of investments plus one.)
That -20 scoring business can really break you if you don't watch out. I know from experience.