@jadesaevitz of course! Every general principle has a statement that is logically identical to it.
This is referred to as the contrapositive.
In this case, our keyword indicator is "all," which introduces a sufficient condition so this statement can be diagrammed as follows:
L âž¡ï¸ BGD
As stated above, however, there is a contrapositive that is identical in meaning.
The contrapositive is creating by (1) reversing and (2) negating the variables.
So the contrapositive here is:
not BGD âž¡ï¸ not L
The necessary condition is required for the existence of the sufficient condition so if the necessary condition does not exist, we can conclude with 100% certainty that the sufficient condition does not exist either.
The contrapositive is far more likely to be tested on the LSAT since it is one additional step.
For a more in-depth discussion of these concepts, please watch our video lesson on Sufficient & Necessary conditions.
Hope this helps! Please let us know if you have any other questions.
