The bike shed effect(also called “Parkinson’s law of triviality”) states that groups give disproportionate weight to trivial issues. For example, a committee whose job is to approve plans for a nuclear power plant spends the majority of its time on relatively unimportant but easy-to-grasp issues, such as what materials to use for the staff bike shed, while neglecting the less trivial proposed design of the nuclear power plant itself, which is far more important but also far more difficult and involved to criticize constructively. When you see more activity than usual in a discussion over a superficial matter (according to a threshold you define), take one decision (even if arbitrary) and call it resolved. You will save everybody’s time.