Right, but a concrete “we don’t know” from a source that is the end all of what a study finds is needed. Because right now everyone and their mother is a arbiter of the “truth” corporate interest and idiocy have choked all reputable data to death. You can not rely on journalists to interpret studies, as their motivation is based on money one way or another. Obviously there is a problem with corruption when that authority is centralized but right now either ignorance or malice is a given