FB ads engineer here. Every time I read these threads, I'm 1. Flattered by how sophisticated HN thinks our systems are (they're not. and we're not that smart. FB's A-team stopped working on ads a long time ago) 2. Entertained by how HN thinks ad targeting works (we don't want to know everything about YOU. we want to know basic info about all of our users.) Hypertargeting doesn't work. Targeting small audiences doesn'…
Please. Ads are Facebook's core business. I don't have any reason to believe you're not telling the truth about basic facts, but the "aw shucks" part is a bit insulting to my intelligence. If the A-Team isn't working on ads, that actually concerns me. When I think of mediocre performers, I think of people who respond most strongly to short-term incentives, not people making nuanced ethical decisions involving a lot o…
> Also, ethics. We do actually think about that a lot these days - it just took us a while to clean up short-sighted product decisions made a decade ago.
I mean, it sounds to me like the A-Team were the ones motivated enough by the technical challenge to not care about cost, ethics or the "big picture". I know plenty of "A-team" engineers like that— they're in it for the technical challenge and to prove themselves, not to be "slowed down".