You crash land on an alien planet, not knowing who or what's around, I would have already created a weapon for protection, even before the big scary robot. Thank goodness they at least have a knife.

You're stranded on an alien planet and you have potentially important information that you decide to keep to yourself, instead of sharing the information with at least your family members, much less anyone else. (And it's WAY too many things kept from WAY too many people.)

One moment you're scared of leaving Earth for another planet that already has other humans inhabiting it, next moment you're on an unknown planet and ready to go running off into the unknown with no worries.

How can a space platform, that was carrying all of the smaller spaceships and was attacked by some unknown force and broken up, not know that it's missing its receiving dish and continue to transmit a message saying it hasn't received a message from anyone?

Someone tells a "robot" that humans will turn on you (the robot) and let you down, but that you, a human, will not turn with the others do. Guess that robot has no logic circuits and the human saying that to the robot isn't very smart.

Thanks goodness the person that wasn't smart enough to stay out of trouble on Earth, that snuck onto the space mission, is somehow smarter than everyone else and has everything they plan work in their favor? (Horribly unrealistic, as things aren't working out as planned for anyone in the group, but somehow works out for the individual bad person.)

For all of the "smart", "perfect" people that went through batteries of tests to be on this mission, they don't seem to be very smart, and definitely aren't perfect.