of communicative actors who would not feel that a mutual understanding had been achieved if the validity claims raised were unjustifiable. Thus, the simple process of reaching an understanding with others impels individuals to be accountable for what they say and to be able to justify the validity claims they raise concerning normative (WE), evaluative (I) and objective matters (IT). Standards of justification Of course a very important issue arises from this, which is that what constitutes a good or acceptable justification varies from context to context. Even if it is accepted that rationality must be expanded to include normative and evaluative dimensions, it is not clear what it is that makes a speech act justified, because it is unclear what constitutes a good reason. It must be understood that there are different kinds of reasons in relation to the different validity dimensions. This is apparent, because what defines a validity dimension are the procedures of justification that are unique to it. For example, if one claims or implies with their speech act that it is raining outside, a good reason for claiming this is that one saw it out the window. If this were called into question, the claim would be vindicated by looking out the window. This is a very simple way of describing the procedures of justification unique to objective validity claims. However, if one claims or implies with their speech acts that 'abortion is acceptable in certain cases', one's reasons for claiming this must be of a different nature. The speaker would have to direct the attention of the listener to certain features of the social world that are infused with meaning and significance. The speaker would have to draw on insights into, for instance, the vulnerability of individuals under the weight of life's circumstances, the kinds of rights that humans deserve, etc. These types of considerations make up the resources available for the justification of normative validity claims. What constitutes a good reason is a more complex problem. Accepting the distinction between the different kinds of reasons that accompany the differentiation of the validity dimensions does not give any insight into what a good reason in a particular validity dimension would be. In fact, it complicates the issue because it makes it clear that there are different procedures unique to each validity dimension and that these dimensions cannot be reduced to one another. Habermas does