It's also about all the things that can go wrong when the comfortable world of technical civilization is left behind.

We have this bright world of daylight, predictable and comfortable to us.

She is most ill at ease in her comfortable world.

I try to make it a better world for her, a more comfortable world.

"I think the world of schools - with teachers and children and parents - is a comfortable world for me."

Or have they lost the comfortable world they once knew forever?

The Baghdad he knew was a comfortable, middle-class world.

But in the end we survived, and Mars is a green and comfortable world.

Fear, fury at having its comfortable world so abruptly upset.

Washington cannot tolerate threats from outsiders who might disrupt their comfortable world.