ETYMOLOGY, THE ROOT MEANING OF WORDS “doctrine ” - late 14c., "the body of principles, dogmas, in a religion or field of knowledge," (12c.) from Latin doctrina "a teaching, body of teachings,🕎 Ephesians 4:14 KJV, Titus 1:13 KJV
Yuval Noah Harari | "Direct Brain Computer Interfaces...Adding to the Body a Second Immune System Which Is Not Organic, But An Inorganic Immune System Made Out of Millions of Tiny Nano-Robots Inside Your Body." - Yuval Noah Harari