Who knows was not at all the answer Rosario was expecting. Merlin was the expert, shouldn't he know? And what did he mean does it matter, of course it mattered! She folded her arms, dissatisfaction showing in the twist of her mouth. "But the placebo effect isn't a treatment, it's a baseline," she argued. "If a drug trial gets the same success rate for the actual drug as the placebo, that ain't a win-win, that's a fail. And— and who says, if someone believes they saw a sign, who says it's gonna affect them in a good way? Maybe it means they take dumb risks or make stupid choices. Maybe it makes everything worse."