It has an unusual use of "we" instead of "us" in a few places. "... that helps we to detect features ...". I wonder if the author originally used "you" and "you

It has an unusual use of "we" instead of "us" in a few places. "... that helps we to detect features ...". I wonder if the author originally used "you" and "your" then did a search and replace to "we" and "our" because 2nd person sounds too informal? I notice the former two words don't appear anywhere. Re-reading it with "you" and "your" and I realize that it works just as well. I guess it's really just a fashion which person you use. It used to be 3rd for academic writing. Now it's 1st, but I guess the most informal way is still 2nd.