I first summarize Baltag and Smets’ contribution to this volume, and praise their work. Then I compare the anti-lexicographic plausibility update that they propose to a proposal by Aucher, as an illustration of the difference between a qualitative and a quantitive formulation of updates. I quote Spohn’s original work that is at the root of research in plausibility updates and of the notion of a...

Any researcher with the most modest public profile is used to being asked for virus samples. Traditionally, we’ve advocated the use of alternatives, especially the EICAR test file, to anyone who doesn’t have access to malware through mainstream, trusted channels, as a way of simulating malware behaviour without the attendant risks of genuinely malicious behaviour. But is the EICAR file really s...