I'm not crazy. My mother had me tested.
I just played my first game and we had a situation where a player(A) flew ships into another player's(B) home system. Now player "A" did not have any orders to instigate ground combat and player "B" had no ships in the home system. The next turn player "B" built some ships but did not have enough to hope to fight player "A"./ Anyway my question is this, is it correct that player "B" can build ships into a system that contains enemy ships and if so do they stop player "A" from moving? How is this situation resolved were enemies ships should never be in the same space to begin with?
The presence of rival ships does not prevent you from building ships. Once player B builds ships, player A cannot move more ships into the system but the ones that are there could leave or fight player B's ships.