Inferential Beliefs

875 Words2 Pages

For an example, consider two alternative belief systems A and B consisting of beliefs A1, A2 and B1, B2 respectively. There are two beliefs in each system none of which can justify themselves alone. If A1 → A2 and A2 → A1, then there are 2 inferential connections in A and a high inferential density. Bonjour says this makes A likely. However, if only B1 → B2 and not vice versa, then there is only 1 non-mutual inferential connection in B and thus a low inferential density. Bonjour suggests that lack of mutual justification makes the whole system of B unjustified since B1 must act foundationally.
From this example, we can see that the coherence of a system is defined to be inversely related to the number of beliefs in the system and proportional to the number of relations within the system. Formally, Bonjour defines coherence by dividing it into five “coherence criteria” such that:
1. A system of beliefs is coherent only if it is logically consistent.
2. A system of beliefs is coherent in proportion to its degree of probabilistic consistency.
3. The coherence of a system of beliefs is increased by the presence of inferential connections between its component beliefs and increased in proportion to the number and strength of such connections.
4. The coherence of a system of beliefs is diminished to the extent to which it is divided into subsystems of beliefs which are relatively unconnected to each other by inferential connections.
5. The coherence of a system of beliefs is decreased in proportion to the presence of unexplained anomalies in the believed content of the system.
Though some facets of this definition are perhaps vague, it is still more precise than McGrew's account. In theory, Bonjour suggests, this non-foundational ...

... middle of paper ...

...rks. One should note that fictional stories may be logically self consistent and might even include vast universes of beliefs that may be coherent to an extreme degree. For example, take JRR Tolkien's lord of the rings series, a cannon complete with self-consistent accounts of history, language, culture, characters, and universal properties. We may want to say that an account of Frodo Baggins taking the one ring to Mount Doom is purely false though belief in such an account might be considered inferentially dense. Unfortunately, if we want to avoid this issue, we must have a foundational understanding of why this account does not match the external world. A non-foundational Coherent account of justification would suggest that believing in this fictional account might be justified, though clearly it is not. This problem poses a real concern when we analyze religious

Open Document