I'm not so sure that we understand what that means completely.

Doubtful we’ll know with certainty unless it’s specifically laid out. People can guess and have suspicions. But until the proverbial men in the arena decide to lay it out. All we on the outside have is what we can draw from our research and personal biases which may for instance make us partial to believing in a certain outcome. Even the information we’ve got access to research is ultimately subject to editing by outside forces and being filtered and interpreted by the researchers.