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Working on practice problems for JLPT N1,

had the following sentence:

**むやみに** 知らない人に話しかけないほうがいい。

Correct answer per the book is よく考えないで.

Incorrect answer per the book 勝手に

Can someone tell me why the former is to be preferred?
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2014-06-07T08:22:57.807
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2014-06-07T14:28:07.907
2014-06-07T08:31:25.667
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word-choice
むやみに equivalents : 勝手に vs よく考えないで
There's a bit of a nuanced difference there.

  * `勝手に` is acting without _caring_ about (the effect on) others.
  * `むやみに` however is acting without _thinking_ about the consequences.

So, the answer `よく考えないで` matches `むやみに`'s meaning of doing something _without
considering_ if it might (e.g.) inconvenience others. In contrast, using `勝手に`
would mean doing it _without caring_ if it inconveniences others.

EDIT: would be nice if you explain what I"m getting wrong when you downvote.
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2014-06-07T12:45:44.113
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2014-06-07T14:28:07.907
2014-06-07T14:28:07.907
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answer