People back in the day had just as much terrible advice as we have today, it’s just that the only one that survived long enough to survive to the present day is the really good advice
But to answer the question, anything related to the ingestion of mercury
Anything related to health care in general, really. Keep in mind that germ theory was only invented in the late 16th century, and it was ridiculed for centuries in favour of Miasma theory. It wasn’t until the mid 19th century that it started gaining legitimacy.
it’s just that the only one that survived long enough to survive to the present day is the really good advice
Okay but… I thought that was basically the point, in that if the advice survived for that long, then it is worth paying attention to at least, to consider if it might apply to a particular situation? e.g. chicken soup really is good for a cold, whether we knew the precise reasons why or not.
Classic case of survivorship bias
People back in the day had just as much terrible advice as we have today, it’s just that the only one that survived long enough to survive to the present day is the really good advice
But to answer the question, anything related to the ingestion of mercury
Anything related to health care in general, really. Keep in mind that germ theory was only invented in the late 16th century, and it was ridiculed for centuries in favour of Miasma theory. It wasn’t until the mid 19th century that it started gaining legitimacy.
Or anything radioactive. Turns out it was a bad idea to make radium-lined water coolers
Okay but… I thought that was basically the point, in that if the advice survived for that long, then it is worth paying attention to at least, to consider if it might apply to a particular situation? e.g. chicken soup really is good for a cold, whether we knew the precise reasons why or not.