Ze Ray

Why is an escalator called an escalator when only half the time it is going up (escalating), and the other time is going down (de-escalating)?

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Anyways, at work, I'm known as Dex! Haha.. it's pretty cool. I've never had another nickname in my life, except for Ray (which really isn't a nickname). The head content-collecter gave me the name, and everyone else seems to have picked it up well :)

The head content-collector also calls me Ze Ray, because I sign off as Ze Ray when I leave him notes to finish off a service job. (WHIP WHIP)
Aahhh.... me and my "awesome" accents XD.......