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by LordLandon 5657 days ago
Same concept as escalartors never breaking - just becoming expensive stairs.
1 comments
thijsterlouw 5657 days ago
Just yesterday here in Shenzhen "Escalator malfunction injures 24". Anything can break unexpectedly...

src : http://szdaily.sznews.com/html/2010-12/15/content_1360566.ht...

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gjm11 5657 days ago
... including ordinary stairs: e.g., http://en.wikipedia.org/wiki/Natural_History_Museum_%28Irela... .
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