I've been rewatching the old Star Trek series. (How did we live without Netflix? Those were primitive times.)
As much as I enjoy these old shows -- woohoo! a new way in almost every episode to rationalize breaking the Prime Directive -- one thing bugs me.
These ships use force-field technology everywhere. The shuttle bays are shirtsleeve environments with huge openings to space, so force fields hold in the air. Force fields also reinforce the hull (so-called structural-integrity fields) and retain the air after the frequent hull breaches. Force fields rather than metal bars keep miscreants in the brig. Force fields provide biohazard containment. And the Star Trek ships also project force fields: tractor beams pull in (overcoming strong and straining engines) enemy ships that would flee.
So why aren't there force fields to keep people in their seats? Instead, the bridge crew is thrown about like leaves. Every $%^#!! episode. All they need is a little force-field generator (triggered and calibrated by an accelerometer, if you want to get technical) in every seat.
Or, failing per-chair force fields, why can't the 24th century master seat-belt technology?