Along with this goes attempted marginalisation of any opposition which appears to contradict that assumption.

The historical evidence contradicts this assumption.

Applying the construction to this sequence produces a real number not in the sequence, which contradicts the assumption that this sequence contains all real numbers.

The exclusion was unreasonable because it contradicted the assumption that manufacture and supply would exclude introduction of foreign elements.

But the two lines have the same length, so the wheels must have the same circumference, contradicting the assumption that they have different sizes: a paradox.