11.   Officials are human, and humans make mistakes.

12.   Researchers soon discovered that humans made leptin, too, raising hopes that the hormone might do the same thing for people that it did for the mice.

13.   Since humans first made sense out of sound, the quantity of conversation in the world has swelled relentlessly.

14.   Since humans make a hormone almost identical to the mouse hormone, researchers are optimistic about success.

15.   The handicap principle holds that humans make showy and sometimes dangerous displays of courage to increase their status and attract mates.

16.   Church officials say their duty to obey God supersedes laws made by humans, and that withholding taxes would make the church an agent of the government.

17.   Family and friends wondering why Fred Lane was shot to death by his wife should remember humans make mistakes, the Rev. Horace Hockett told mourners.

18.   Humans make lines.