Twitter’s own research shows that it’s a megaphone for the right. But it’s complicated.

(Protocol) Twitter is publicly sharing research findings today that show that the platform’s algorithms amplify tweets from right-wing politicians and content from right-leaning news outlets more than people and content from the political left.

The research did not identify whether or not the algorithms that run Twitter’s Home feed are actually biased toward conservative political content, because the conclusions only show bias in amplification, not what caused it. Rumman Chowdhury, the head of Twitter’s machine learning, ethics, transparency and accountability team, called it “the what, not the why” in an interview with Protocol.