Two policies behind the parole evidence rule:


1. predictability - parties should be able to depend in the writings and the agreements they make


2. slight distrust of juries - a jury might be biased for a sympathetic person who invents a conversation or exaggerates a story about what happened before or after the contract writing

Roadmap:
1. effect and policy under
2. types of evidence that raise parol
3. integrated, partial, non integrated
4. distinguish between contradictory and consistent terms
5. identifying evidence otherwise admissible