 interact with another child or share that block because they could do whatever they wanted to do. And there was critical play and imagination time where they weren't playing with other kids, which is how they learn. And she adds... That meant disrupting social interactions, which we know are the foundation of brain development for little kids. So much brain growth happens in the first four years, particularly in the first two years. And we basically said, put on a mask, stay away from grownups, don't talk to other kids.