That so many people should be stumbling around in this kind of fog is an obvious cause for concern.

It doesn't help much when people stumble over our setups and delay us.

He becomes particularly excited when people stumble on the building by chance.

He's used to seeing people stumble and stutter in his presence.

As it was, people no longer stared at my healing face or stumbled awkwardly to find something to say to me.

"Real conversation, it seems to me, is when two people who are different, and face each other, stumble with some kind of candor."

And that's where the other interesting thing that Hans's people have stumbled on comes in.

At length he said, "Our people stumbled upon a technology about two years ago.

This is why many people stumble through life to the very edge of the abyss without knowing where they are going.

"But how could primitive people stumble on such an exact geometry?"