  How should my own decisions affect my beliefs about the outcomes I expect to
achieve? If taking a certain action makes me view myself as a certain type of
person, it might affect how I think others view me, and how I view others who
are similar to me. This can influence my expected utility calculations and
change which action I perceive to be best. Whether and how it should is subject
to debate, with contenders for how to think about it including evidential
decision theory, causal decision theory, and functional decision theory. In
this paper, we show that mechanised causal models can be used to characterise
and differentiate the most important decision theories, and generate a taxonomy
of different decision theories.
