I've just picked up Space Alert, and read through handbook (as yet un-played), the thing that I can't understand is the reason for placing your action cards face down during the planning phase.
The only reason I can think of is that it adds to the chaotic-ness of the planning phase, being unable to instantly see what another player is planning.
I just wanted to check there's not a mechanic somewhere that I've missed. (Was thinking along the lines of BSG game, where any cylon players are trying to undermine the success of the mission but negatively contributing towards the goals)