1.   He used laughter as a way of placating persecution in advance.

2.   We also use laughter to mask our incompetence and to cover for possible failure.

3.   Everyone could use more laughter in life, he says.

4.   He suggests that rats and primates, especially juveniles, use laughter to distinguish playful from threatening physical interactions.

5.   In several situations I see laughter used, apparently unconsciously, to help get things as diverse as power, friendship, a lover or truthful behavior from subordinates.

6.   Woodard uses laughter the way a munitions expert might use a pair of wire-cutters.