I have been reading Anscombe on intention. So far, it looks like intention actions are classified as such only if the agent performing them knows without observation that they have been performed under some description of the action in question which is familiar to them. This sounds right. But what of cases of emulation? Cases where I, say, unknowingly act in the fashion of someone else?

It just goes to show how little assessments of intention count in assessing the behaviour of others. Unintentional isomorphism is blameworthy, and we scorn individuals who have the audacity to attest that they did know what they were doing.