I agree. And it's different if a child is 4 or 9 years old. I posted some statistics: https://news.ycombinator.com/item?id=13549214 https://news.ycombinator.co

I agree. And it's different if a child is 4 or 9 years old. I posted some statistics: https://news.ycombinator.com/item?id=13549214 https://news.ycombinator.com/item?id=13549214