From the guy who invented spaced repetition: https://supermemo.guru/wiki/SuperMemo_does_not_work_for_kids https://supermemo.guru/wiki/SuperMemo_does_not_work_fo

From the guy who invented spaced repetition: https://supermemo.guru/wiki/SuperMemo_does_not_work_for_kids https://supermemo.guru/wiki/SuperMemo_does_not_work_for_kids > Whatever enhances child's model of the world will integrate with his "world" knowledge. It can even integrate at the physical neural level and last for a lifetime. All irrelevant and abstract material will be rejected. As a result, this is a perfect illustration of the fact that early teaching makes little sense. It is the child's brain that makes choices on what to remember. SuperMemo becomes useless because it does not have a contribution to the child's knowledge. That contribution will only slowly develop over time when memory improves, mnemonic capacity improves, and the ability for abstract reasoning shows up. https://supermemo.guru/wiki/Educational_dyslexia https://supermemo.guru/wiki/Educational_dyslexia > The mechanism of educational dyslexia (or school-induced dyslexia) is the same as the formation of toxic memory in all forms of coercive learning. When a child learns to associate reading with displeasure, the learning process may grind to a halt. A regress in reading skills is also possible. Sensitive children with passions that do not involve reading are at particular risk. https://supermemo.guru/wiki/Don%27t_teach_your_child_to_read https://supermemo.guru/wiki/Don%27t_teach_your_child_to_read > Optimum age for reading is not much different from the optimum age for learning multiplication or learning how to use a map. Optimum age is as absurd as the optimum time to learn the Beer's law in physics. Some people learn Beer's law at 3, some never learn it. In the same individual, Letter A may be familiar at the age of 1.5, while the distinction between U and Y can be made stable only at 7. Should that smart kid learn to read at 1.5? No! That would sure lead to toxic memories (unless under zero coercion). Perhaps at 7? No! Why wait? Knowing A may accelerate learning B. > As long as it comes naturally, early is good but late is also nice, and always better than never.