The stacking of either term is unnecessary, because all counter-examples are also examples, thus: * an example supporting the counter-example is simply another

The stacking of either term is unnecessary, because all counter-examples are also examples, thus: * an example supporting the counter-example is simply another counter-example, and * an example contradicting the counter-example is, by definition, also another counter-example. Corollary: all examples that can be opposed or contradicted by counter-examples are themselves also counter-examples.