Tip #98: Beginning words

Anything you introduce in the Beginning (1/4), the savvy reader knows on some level is important to the overall story.
Therefore, be careful about every word you use. If you use dark and ominous words in the Beginning, the reader expects the story overall will be dark and ominous. If you introduce a gun, the reader knows violence is coming, likely even death by gunshot. If you introduce sweetness and light, the reader expects the story to reflect the same.

http://plotwhisperer.blogspot.com/2010/03/opposite-of-foreshadowing.html