Doug - what Steve Shaw said -

And I love it that Kipling was pointing it out a hundred and something years ago in
Our Fathers Of Old

& sung by Peter Bellamy

"Pat as a sum in division it goes -
(Every herb had a planet bespoke) -
Who but Venus should govern the Rose ?
Who but Jupiter own the Oak ?
....Half their remedies cured you dead -
Most of their teaching was quite untrue -
"Look at the stars when a patient is ill
(Dirt has nothing to do with disease),
Bleed and blister as much as you will,
Blister and bleed him as oft as you please."
Whence enormous and manifold
Errors were made by our fathers of old.

...If it be certain, as Galen says -
And sage Hippocrates holds as much -
"That those afflicted by doubts and dismays
Are mightily helped by a dead man's touch,"
Then be good to us, stars above !
Then be good to us, herbs below !
We are afflicted by what we can prove,
We are distracted by what we know.
So - ah, so!
Down from your heaven or up from your mould,
... Send us the hearts of our fathers of old !