かぎらない

[eeky]

いろいろな物体が教室を飛び回ると、始末の悪い事故にならないともかぎらないので、フリットウィック先生は生徒一人にクッションひと山を与えて練習させた。

(The children are learning to use magic to make objects fly away from them.)

What is the purpose of かぎらない in this sentence? I can't seem to get my head round it.

 

[Mike Cash]

States the situation (or potential developments) weren't limited to being without accident. In other words, just a way of stating there was danger, hence the mountain of cushions.

 

[Toritoribe]

…であるとは限らない
be not necessarily [always]…
not all…are…

かぎるの英語・英訳 - 英和辞典・和英辞典 Weblio辞書

事故にならないともかぎらない
Not all cases are not an accident. = It can be an accident.

 

[lanthas]

Question from me too: what is the ひと after クッション, is it similar to の? I can only seem to find it as 人 in dictionaries.

 

[Toritoribe]

一山

 

[lanthas]

Oh . Thank you.