LSAT and Law School Admissions Forum

Get expert LSAT preparation and law school admissions advice from PowerScore Test Preparation.

 concrottrox11@gmail.com
  • Posts: 29
  • Joined: Dec 07, 2021
|
#92582
What does the phrase mean "if but only if" operates in the same way, as does just reversing a conditional statement?"

Can you please give an example of using both "if but only if" and what you mean by "reversing a conditional statement?"

Thank you!
User avatar
 Dave Killoran
PowerScore Staff
  • PowerScore Staff
  • Posts: 5852
  • Joined: Mar 25, 2011
|
#92600
Hi C,

The "if and only" model, which includes variants such as "if but only if," "when and only when," "when but only when," etc is awesome because it produces a very simple relationship: a double arrow, or :dbl: .

Under a double arrow, each condition is both sufficient AND necessary for the other. That's tough to understand at first, so it more easily can be understood as : they both need each other :-D

So, if you have A :dbl: B, it means only the following two scenarios are possible:

1. A and B both occur.
2. Neither A nor B occurs.

That's it. What's impossible is one happening and the other not happening. Here's more on it: https://blog.powerscore.com/lsat/bid-26 ... questions/

Thanks!

Get the most out of your LSAT Prep Plus subscription.

Analyze and track your performance with our Testing and Analytics Package.