if you're writing an article and say
"let's hear what so and so has to say" you're actually saying "let us" which is technically a collective voice so it's real easy to have that sneak in sometimes even when you're not supposed to have such a voice

(i just did this)

@alyx What's a context where such a voice is not supposed to, uh, be?

I don't do much formal writing, so I have no idea about this.

@benhamill usually a client will have requirements for their voice, like never use a collective we on our website / official materials or whatever

@alyx Ahhh. I see. So in that case you'd replace, "Let's look at what…" with maybe, "Have a look at what…" or something?