Those arguing that we can't conclude anything without a randomized, controlled trial need to reread [1]. Yes, randomized, controlled trials are better, and the

Those arguing that we can't conclude anything without a randomized, controlled trial need to reread [1]. Yes, randomized, controlled trials are better, and the gold standard. No, they aren't always available and sometimes--even often--science can draw conclusions with evidence that came from other sources. [1] https://www.bmj.com/content/bmj/363/bmj.k5094.full.pdf https://www.bmj.com/content/bmj/363/bmj.k5094.full.pdf