Louis XV, to eir misfortune, did not know about RCTs.
But if snake oil was poisonous, and it was known that anyone who ingests it dies immediately afterward, then this information would be of value to Lous XV, in ignoring/​banning at least one sort of pseudo-physician.
But if snake oil was poisonous, and it was known that anyone who ingests it dies immediately afterward, then this information would be of value to Lous XV, in ignoring/​banning at least one sort of pseudo-physician.