Someone close to me remarked on the inherent absurdity of statements such as ‘this page intentionally left blank’ on forms and communications from companies. I mean, if it’s intentionally blank, how does writing this affect the blankness?

Someone close to me remarked on the inherent absurdity of statements such as ‘this page intentionally left blank’ on forms and communications from companies.

I mean, if it’s intentionally blank, how does writing this affect the blankness?