If Newspeak were really to cut out all 'crimethink' concepts, how would it be possible to have the three slogans of the Party?

War is Peace

Freedom is Slavery

Ignorance is Strength

This is a major contradiction that cannot be attributed to doublethink, because if words such as 'freedom', 'slavery' and 'ignorance' were to be cut out of Newspeak, and Newspeak were to dominate, how would these slogans even be articulated? Thoughts, anyone?