Posted by Nick_G on 02/06/2016 21:45:58:
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'Off the rails' ……… As in e.g. "He's gone off the rails"
What is the origins of that.???
Nick
Off the rails, as in crazy, unsound or madness?
Well if you think about it the most common thing people know of on rails is a train. A lot of trains in the victorian times often crashed because the train would de-rail, "come off the rails" as it were, leading to the moment of crashing. People of unsound mind could have no fear of death so would be described as crazy, so the association is clear.
You could extrapolate that further to describe how rails are commonly thought of as been laid ideally in straight lines(they obviously are not always but there is a limit to the curvature in real life), so someone could be described as receiving a form of "guidance" as it were, from these rails, when someone is off rails they have no guidance, no further path on which to go and are about to crash, alot of people would've been hurt or even fatally wounded from these accidents until the rules and practices of rail construction have all but regulated their unfortunate regularity away.