For 99% of the world, these terms are interchangeable. How does this argument relate to the article?

For example there are both transsexual people and transgender people but they're different in kind.

I don't think it wise to mix two controversial topics, especially since on their face they seem kind of contradictory. Gender identity discussions and biological dimorphism are both hugely emotional topics, and mixing them here would lead us down a discussion path we don't want to go.

> The paper confused sex and gender badly. E.g. Man and male are not nearly equivalent groups. How could someone who thought so deeply about the subject miss that?

Ok, but how do you propose the paper to be rewritten taking those into consideration.

Or do you suggest that Google force every employee go through a medical exam to determine their sex and make sure no one chooses to identify as a different gender to pass through the hiring process easier...

Sorry, I don't quite see what you're getting at there basically, it can interpreted in a few ways.

how is the distinction relevant for an engineering candidate? unless you're implying that google has a pilot child labor project in the works it strikes me as highly superfluous