quick clarification on conditional sentence using not

vanessa fisher

Hey everyone,

So I came across this thing in LG that got me a bit confused. Hoping someone can offer a quick clarification. Perhaps my brain just froze.

There is this one answer choice in LG that says:
If Hamadi is not appointed to the trial court than Perkins must be.

J.Y translated this as: H --> /P

but isn't it the other way around? In this case it is the "If" that is starting the conditional, not the "not". So shouldn't the translation be:

/H --> P

I don't know why I'm stumbling on this one but just can't see why he flipped it in this situation.

10000019

I would have done /H --> P, but since this is a grouping problem I don't think it'll negatively impact your diagram.

vanessa fisher

@USER123456
Yeah, so you feel the same as me. It wasn't consequential for that game but I'm more trying to understand the logic under what J.Y did. Not so much for just this question but just in general if there is a larger logic principle I might be confusing

Gladiator_2017

I just did this game. It's because it is an in out game and JY is using the Appellate Court as the in group and the Trial court as the out group. So if H is not in T, that means he's in A which is the in group. Hope that helps!

vanessa fisher

@Gladiator_2017
Ah I see! thanks that helps a lot.
I was trying to apply normal conditional logic and couldn't figure out what was up.

Gladiator_2017

Of course! In/out games are my weakness on LG. So I've been trying to work on a consistent system for how to diagram my rules and get to the inferences. Little by little!

vanessa fisher

@Gladiator_2017
Yeah, I have struggled a lot with LG in general. I finally feel, after tons of practice, that I'm getting to a place where I can do most all of the questions, but I'm still working to finish the whole section under time
Good luck!