The shift can look steady until volume changes the pace, when totes arrive in uneven intervals, cartons slide in from a humid section, and a supervisor keeps checking the outbound lane because a temporary interruption can ripple into the next hour. A minor misalignment starts when an item lands slightly crooked, another catches it, and someone repositions it forward without thinking twice. Yet, the real issue is not that one obstruction so much as the frequency of these rapid corrections in confined zones near pinch points. Equipment and guards are in place, but they do not eliminate the pressure that often drives hands closer than planned, as attention drifts from scanning, especially during surges and changeovers.