After the all time classic trek blooper 'Where are the seat belts?' concept that passed as a joke in the first episode in a rather canning way, they showed something in a later episode that at first glance seemed ok but now that I watched it again it striked me as an important inconsistency of logic: The gravity goes off and the bridge sounds normal and calm saying to the captain oh no problem, it'll be back soon; in a humorous way the captain falls off the shower and lands on its base unharmed. Well, come to think of it that was a serious security situation. What if one falls on a sharp object or at least the corner of a table? That's serious business losing gravity. It's how people get killed in airplanes in high turbulence and why passengers are asked to wear seat belts.