Another part of the study gave some clue about why.

"We think the hardest part in all this is giving people a sense of where they are."

Only the discarded parts gave the game away, but there was nothing she could do about that.

Was this a refusal on my part really to give of myself?

Yet part of her could not give him that knowledge.

Your friend here will wake up before too long, and a part of me would give my life to take his.

The last part gave him pause for a moment, but then he went on.

The final part "Three drinks is no drink at all" gives him an idea.

He heard a roar, saw part of the far mountain wall give way.

In other words a large part of the human race was giving its mind to this subject.