I wouldn’t mention soap. Depending on the particular period of antiquity, it’s possible no one would know what you’re talking about, apparently: http://en.wikipedia.org/wiki/Soap#Early_history And I have to wonder whether that soap would serve as a disinfectant. Further concerns: they don’t have experiments, randomization, or statistics—why should they believe that soap works even if they use it?
I wouldn’t mention soap. Depending on the particular period of antiquity, it’s possible no one would know what you’re talking about, apparently: http://en.wikipedia.org/wiki/Soap#Early_history And I have to wonder whether that soap would serve as a disinfectant. Further concerns: they don’t have experiments, randomization, or statistics—why should they believe that soap works even if they use it?