Tim and the Tin Titan


Failure is not an option
At the Metro station I use everyday, there are 4 escalators, one long set, one short set. Invariably, one of these four breaks down every week, as was the case yesterday. I then realized that escalators are one of the few machine or devices, that even when they completely fail, still perform the task of the device they replaced. If your word processor fails, you cannot use your computer as a typewriter. If your motorcycle breaks, you cannot use it as a bicycle. In fact I can't think of another device that has this "predecessor failover" mode, can you?