They do not invalidate or contradict the principle of customer focus; rather, they simply add extra dimensions of awareness and caution to it.

That sounds like it contradicts the principle of equal treatment.

In addition, had the court allowed for an inference to be made from silence, suspicions would then inherently supersede and contradict the principle that defendants are innocent until proven guilty.

Security through obscurity has never achieved engineering acceptance as an approach to securing a system, as it contradicts the principle of simplicity.

He argues that the reference to secure and recognized borders can be interpreted in several ways, and only one of them contradicts the principle of full withdrawal.