 The interaction between knowledge and obligations is not limited to the way knowledge ‘defines’ obligations. An important role is also played by whether the agent consciously violates her commitments. In fact, most juridical systems contain the principle that an act is only unlawful if the agent conducting it has a ‘guilty mind’ (mens rea): for the agent to be guilty, she must have committed the act intentionally/purposely. Of course, there are different levels of ‘guilty minds’, and some legal systems distinguish between them in order to assign ‘degrees of culpability’ (e.g., an homicide is considered more severe if done intentionally rather than accidentally). For example, on the one hand, stating that it is illegal to do \(\alpha\) negligently means that it is illegal to do \(\alpha\) while being aware that the action carries a substantial and unjustifiable risk. On the other hand, stating that it is illegal to do \(\alpha\) knowingly means that it is illegal to do \(\alpha\) while being certain that this conduct will lead to the result.[17] These and other modes of mens rea are formalized in Broersen (2011) within the  STIT  logic framework.