What would happen if your skull bone had movable joints?

If the skull bones had movable joints, it would significantly compromise the structural integrity and protection that the skull provides for the brain. This increased mobility could lead to greater vulnerability to injuries, as the brain would be less shielded from impacts. Additionally, it would disrupt essential functions such as biting and chewing, as the skull's rigidity is crucial for proper alignment of the jaw and teeth. Overall, such a change would likely result in severe consequences for both brain safety and basic physiological functions.