Math, science, logic, and philosophy classes starting as soon as kids can learn. Specifically teaching everyone how to identify logical fallacies. Preventing socially conservative dictators and politicians of any economic or religious persuasion from committing purges of information and people. Over half of traditional Chinese medicine came to exist under Mao after he had convinced the young people to kill many of the elderly and highly educated. There were no doctors, so they made up some stuff and called it medicine and gave it a backstory that tied it to herbal remedies that were traditional.