You're making some very, very broad, blanket statements about vast swaths of human experience and recorded wisdom (hint: that usually doesn't work out so well - nuance is our friend!).
But, to play along, in attempt to affirm or deny this - let's start with what you mean by "those texts". Which texts, specifically, are you referring to, when you say that they contain absolutely zero applicable content to the care of modern humans? (Where I'm paraphrasing your statement: "There is no medical wisdom in any of the old texts (from any culture) that are relevant in 2018").
edit:
you know what? I'll help you out with a single counterexample to your statement, so that we can move on:
To summarize, the plant Artemesia Annua was recorded approximately 2500 years ago in traditional Chinese medical herbal texts as being an effective treatment for the disease known as malaria. The 2015 Nobel Prize in Medicine and Physiology was awarded to the chemist who used this specific information from these texts to aid in the discovery of a compound that is now the defacto treatment for this disease.
There's plenty more examples like this; I will end my confrontation of your current system of beliefs here. The rest of this form of work is completely up to you!
But, to play along, in attempt to affirm or deny this - let's start with what you mean by "those texts". Which texts, specifically, are you referring to, when you say that they contain absolutely zero applicable content to the care of modern humans? (Where I'm paraphrasing your statement: "There is no medical wisdom in any of the old texts (from any culture) that are relevant in 2018").
edit:
you know what? I'll help you out with a single counterexample to your statement, so that we can move on:
http://www.bbc.com/news/blogs-china-blog-34451386
https://en.wikipedia.org/wiki/Tu_Youyou#Malaria
To summarize, the plant Artemesia Annua was recorded approximately 2500 years ago in traditional Chinese medical herbal texts as being an effective treatment for the disease known as malaria. The 2015 Nobel Prize in Medicine and Physiology was awarded to the chemist who used this specific information from these texts to aid in the discovery of a compound that is now the defacto treatment for this disease.
There's plenty more examples like this; I will end my confrontation of your current system of beliefs here. The rest of this form of work is completely up to you!