A striking example of Chesterton's fence:
https://en.wikipedia.org/wiki/G._K._Chesterton#Chesterton's_...
That's not to to say that cultural evolution doesn't happen, but the relationship between vitamin-c and scurvy just happened to be extremely hard to work out.
Exactly
'Chesterton's fence' is the principle that reforms should not be made until the reasoning behind the existing state of affairs is understood.
I started taking 2,000 mg of vitamin C daily. WBC count bounced back and, after a tooth extraction, pain is gone.