The modifications to "London" added heavy weights fore and aft and severely overstressed the hull. Fan drive belts overstressed fan bearing housings in the crankcase leading to cracking. The omission of pylons reduces drag and eliminates the risk of them being overstressed. Sudden changes in gradients would have also overstressed the primitive couplings between the carriages. After the announcement, Ferro and Anna confront the overstressed Commander. Seeing it, the overstressed Jessie bursts into an expletive-filled mental breakdown on live TV. As a result, the autoclave became overstressed and failed completely. On the drive there, Dr. Phil appears as a visual manifestation of her overstressed subconscious. To do so material is added in overstressed areas and removed in understressed areas. The "group consciousness" model of Japanese social life, however, has been overstressed at times. The overstressed female fitting may split days, weeks, or even years after initial installation. Like group consciousness, however, the theme of hierarchy has been overstressed. Modjeski determined that the original bridge was indeed overstressed for rail traffic.