On: Cracking a 512-bit DKIM key for less than $8 in th...

[inopinatus]

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.