Permission to make a mess

This evening's conversation at the time that F1-3 announces she's done in the bathtub.

Makita: Oh! Look at the mess you made. There is water all over the floor and a huge pile of toys. Why did you do that?

F1-3. I was doing science and that why it's a mess. I was doing science. This is how you do science.

Makita: Oh. Okay.