It should be clear that in all circumstances where ( 2 ) is true , ( 1 ) is also true ; and likewise , in all circumstances where ( 2 ) is false ( i.e. if a world is imagined in which something that was not black , yet was a raven , existed ) , ( 1 ) is also false .
Whenever ( 2 ) is true , ( 1 ) also is ; and likewise , in all circumstances where ( 2 ) is false ( i.e. if a world is imagined in which something that was not black , yet was a raven , existed ) , ( 1 ) is also false .