I’m sorry I derailed the debate here, if I had read and re-read the article a few times and studied all the wikipedia articles (or moved to an english speaking country and re-enroll in a computer science class…) I might have guessed which HCI it was. But it seems I’m not the only stupid non-american here… I do have a Bachelor i Informatikk (wich is Norwegian for Bachelor of Computer Science) and we did learn about menneske-maskingrensesnitt (literally man-machine-interface but somehow this did not make me think HCI: that must be menneske-maskingrensesnitt!.
If you’d used the acronym-tag I would have noticed it and discovered what it meant straight away.
The AC/DC argument is just silly, when an abbrevation (at least according to Wikipedia’s disambiguation page) may refer to a rock-band, alternating current/direct current, or a slang expression it’s simple to guess; but STILL it wouldn’t hurt to remind the reader which one you refer to now. Even if the acronym/initialism/abbrevation is unique, explaining it in the first paragraph it occurrs isn’t useless because there’s a good chance someone have not seen it before. Some abbrevations we use without knowing what it stands for I’m sure there’s a lot of people using the word URL each day to refer to the HTTP-thingy in exporer without knowing that URL stands for Uniform Resource Locator and HTTP stands for Hypertext Transfer Protocol, so when writing an article about either it doesn’t hurt at all to explain them…