white is black's black
Every term implies its opposite. Which is why the theory of positive affirmations, the assertion that the subconscious never hears "no" and so you must use positive language, is oversimplified. Rich contains the imagining of poor; lose contains the imagining of gain (and vice versa); always contains the imagining of fleeting.
And so it isn't surprising that having just been writing about surrender, when Black Friday rolled around all I could think about was white flags.