veloc1ty said:
I've never understood why people think first-person is less "sophisticated". It's how your ideas are expressed and supported that matters, and if you make it personal by using first-person it's more impressive and original (when done right).
Basically it comes from the fact that essays are supposed to be scientific, and there is no you, me, we, etc in science - the agents outside of what we're studying are unimportant. These people are reserved for narratives, where "I" and other pronouns features heavily.
^ That is the traditional argument, to which I don't subscribe. I've written peer-reviewed academic pieces, and noone's ever had a problem with the first-person singular pronoun, if it's used sparingly and appropriately. Saying some things (eg "I think" without qualification) can be a trap anyway.
m00 said:
you can use pronouns such as 'we' but never never ever use 'I'
That's odd; the only difference between "we" and "I" is the plurality.
The reason why some people claim that you should stay away from "I" is because it's part of a list of personal agents which are unscientific - people who both shouldn't be in a paper because it's not about them, and because the reader doesn't care.
If you say that you can't use "I" (which you are), you are limited exclusively to the third-person pronouns "it", "he", "she", "they", and their accusative and possessive counterparts.