Answers that Look Different
and Might Be Unequal

Basic Idea

• Partial equality information
• Use "look different" and test for inequality
• A series of test of decreasing strength

Equality testing

• Test for unequal, e.g. ..., or ...
• Test for equal, e.g. ..., or ...
• Test for not equal, e.g. ..., or ...
• Test for not unequal, e.g. ..., or ...
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