['Ghosts' seems like a larger concept than the braintalk or English is giving me directly, so I don't know specifically what goes wrong.  But in a broad sense, if you are otherwise thinking clearly, you do worse on average by having more false beliefs?  Maybe somebody tries to buy not-real ghosts using real money... do I need to walk through the coherence theorems for cases like that?]

['Ghosts' seems like a larger concept than the braintalk or English is giving me directly, so I don't know specifically what goes wrong.  But in a broad sense, if you are otherwise thinking clearly, you expect to do worse on average by having more false beliefs?  Maybe somebody tries to buy not-real ghosts using real money... do I need to walk through the coherence theorems for cases like that?]