Changed that the baby are independent when they are just 5 years old and that is awesome because this year I mean 2022 the people they have so talent on whatever stuff and they are so intelligent to think about what is the problem or the thing is not solutioned that is why we change every single day why? because we are learning so much from college but my point is in the past 20 years there's not telephone or tv or social media so it kinda hard to answer that question but the answer might be "We teach everything we know and the baby or child they are learning so much so when they plays they learn something we didnt understand in the past."