I submitted this article because I was especially intrigued by the high-profile ex-Google ML Researcher hire (and then departure.) Anyone know what exactly the

I submitted this article because I was especially intrigued by the high-profile ex-Google ML Researcher hire (and then departure.) Anyone know what exactly the BlackRock ML group was doing? Was it supposed to be a competitor to Renaissance Technologies (https://www.bloomberg.com/news/articles/2016-11-21/how-renaissance-s-medallion-fund-became-finance-s-blackest-box https://www.bloomberg.com/news/articles/2016-11-21/how-renai...)? Was this an NLP-driven fund gone haywire? I'm particularly interested as I was recruited for this group multiple times, so a bit relieved I didn't pursue it. I wonder if there are any lessons (about what to avoid) to be learned here about the way the group was structured...or if it was simple randomness gone wrong.