It really did make me think. Are they planning on rigorously testing different types of content to uncover bias? I'm not sure that publishing the intent beforeh

It really did make me think. Are they planning on rigorously testing different types of content to uncover bias? I'm not sure that publishing the intent beforehand is good, but OTOH Facebook probably isn't paying close attention. It'd be interesting to see other types of posts be tried across different pages to reveal bias. But it has to be properly done, so FB can't deny it later.