Question: In [this answer](https://ell.stackexchange.com/a/185/54), Liam W said [emphasis added]

> 
> 'A Japanese' **infers** the Japanese person is a thing, and not a person.
>  This is what **deems** it offensive.
> 
> 
> 'A Japanese Person' **infers** the Japanese person is just that - a
>  person, and is therefore considered fine for use.
> 
> 
> 

While not wanting to go [this far](http://xkcd.com/1133/) in using simple words, should we try to use simple and common words that are easily understood by people learning English?

An exception to this would be technical terms to do with English, such as "split infinitive". They should still be used, because it is easier to google for "split infinitive" than "boldly putting a word between "to" and the verb".

Answer: 
I think that the example is a borderline case: 

Certainly, the content could be expressed elegantly enough without using the words "infer" and "deem". They do not add better precision or explanation. 

On the other hand, for me, the answer (and the question) was new and surprising and I really learned something, and yet I have no problems whatsoever with words like "infer" and "deem".

So, I would advice that one should use words that are understood by most people who would actually be interested in the answer to the question, but this is probably the case here.
Coming to think of it and now that I have been using this site for almost three days, it makes sense to me that simple language should be highly preferred here simply because of the fact that we can expect to see "a lot" of foreign-language visitors here and more we make it simple for them to "comprehend the answer" more the better.