You’re Wrong: an F.A.Q.

I'd go further and say that eveyone is almost definitely wrong and if they are ever even slightly right it is nearly always by accident and usually nobody notices, however for a certain select set of wrong things we have ways (that are probably wrong) of measuring just how wrong they are, so we can slowly try to replace them with things that are slightly less wrong and these things we call 'science'.

That depends on whether the person pronounces it as an alphabetism or as a word. Some people say FAQ and pronounce each letter (like /ɛf e kyu/¹), in which case they use "an". If they pronounce it more like a word (like /fæk/) then they'd use "a". So, it's a difference that depends on how the person speaks, and may be right or wrong depending on how each person learns to pronounce the acronym.

[1]: My IPA is rusty, so bear with me.

You are wrong, that depends on how you pronounce FAQ.