why has 当り前 been translated as "must-be" here?


For a research project I am trying to understand a paper that originally
appeared in Japanese and that also has an official English translation.

In the original, 当り前 appears. In the official translation it is rendered as
"must-be", but as far as I can tell, this means "natural", "obvious" or
"taken-for-granted".

Can anyone clear this up for me?

Thank you

I have included a scan of the title of the original paper. [![why is 当り前 must
be?](https://i.stack.imgur.com/MHfCQ.png)](https://i.stack.imgur.com/MHfCQ.png)




While it may be an _'official English translation'_ , that does not mean that
it was originally done by a native English speaker.

That being said, it is not really wrong, as individual translations need not
have consensus.

当たり前 means 'it is or should be considered as obvious/natural/a given'. It
should 'go without saying'.

> The quality of our product is so obvious/natural that it would be absurd to
> assume otherwise. For us and our customers, this level of quality is 'a
> must'. **It 'must be' this level of quality for us to put our name on it.**

**_Must-have quality_** might sound a mite better and make more sense, but
they're not going to reprint everything now.

Edit: Thanks to @Locksleyu 's answer and reference of the Wikipedia entry,
'Having special appeal and meeting basic (obvious;given) thresholds' seems to
be the intended message behind the paper you posted.

