When you have Group 3 and 4 together.

smg0011

Hi guys,
When you come across a group 3 and group 4 indicator in the same sentence ("cannot" and "unless"), which rule do you use? e.g. the group 3 or group 4 rule. Basically, how do I react to multiple indicators from multiple groups in the same sentence?

I can't find the answer in my notes. I think it is somewhere in the core c. I don't know where.

Thanks.

KevinSage

I usually use the group 3 rule

Use this as an example: The dog CANNOT bark UNLESS it is outside.

using group 3 rule: Negate the part that states that the dog CANNOT bark and put it in the suff. condition. Like so, Bark --> Outside (contrapositive is: /Outside --> /Bark)

DaveH162

Hey @smg0011

Just pick one and keep the other indicator as a negation.

For example, Jared cannot go to the park unless Kate goes.
Using group 3 or 4, you will get /K-->/J or the logically equivalent contrapositive J-->K