translation.en: On the other hand, when our minds wander, they're unconstrained. We can't change the physical reality in front of us, but we can go anywhere in our minds.
translation.zh: 但另一方面，走神可以让 我们的思想无拘无束。我们不能改变在我们 面前的现实世界，但是我们的思想却可以飞到任何地方。