Kantian Antiques

When one side of a deal knows something the other does not, is it all right to say nothing?

What follows is a run of cases involving sellers, buyers, charity shops, antique shops, and people who know exactly what they are looking at. Some are deliberately very similar, but differ in ways that many people find morally important.

Give each case a considered answer on its own terms. There is no need to force it into line with what came before.

After each main section, we pause and show how your responses compare with those of other people who have completed the experiment.

You will answer with a simple verdict each time: Permissible or Not Permissible.