The Fairy Swimming Pool

As if to illustrate the point I made in Quantum Theory, I heard the following sound issue from the bathroom last night:

Lori: Nooooo! Josie! Don't let the water out. I still need to make the fairy swimming pool.

Intrigued, I wandered through to the bathroom to mediate this burgeoning dispute.

Lori was lying on her back in an ever-reducing pool of water, splashing it on to her tummy to fill the "fairy swimming pool".

Yes, you've guessed it, her tummy button now functions as a place for her imaginary fairy friends to have a refreshing dip.

Now that was...unpredictable.

Quantum Theory

I was reading a book about the world's greatest ideas, and I came across this passage:

"Quantum theory is based on the discovery that at the very smallest scales, smaller than atoms, things behave very differently. The classical rules of physics, the rules that govern everything from how an ant crawls to how the universe expands, just don't work at the sub-atomic scale, it seems. In classical physics, things behave according to a strict pattern of cause and effect. Quantum theory...is all about probabilities. It means you can never say where something is...you can only say where it probably is. It's position is fixed only when you observe it."

Either this is wrong, or my children are sub-atomic particles governed by quantum theory, because this describes *exactly* the state of unpredictable chaos that occurs when they have a bath together and I shut the bathroom door.