On pp. 361-362 of "A Causal Theory of Knowing" Alvin Goldman
describes two lava cases: a case in which a subject Sdoes know, on the basis of seeing solidified lava
in a certain area, that a certain nearby mountain erupted long
ago; and a case in which a subject Sdoes
not know, despite seeing solidified lava in a certain
area, that a certain nearby mountain erupted long ago. The two
subjects have the same evidence; but one has knowledge where the
other doesn't.
Briefly describe the two cases, emphasizing the relevant
simliarites and differences between them. (Spend no more than
one page on this part, preferably less.)
Briefly explain how Goldman's causal theory accounts for
knowledge in the one case and lack of it in the other. (Spend
no more than one page on this part, preferably less.)
Decide whether David Lewis's theory, presented in "Elusive
Knowledge" could account for there being knowledge in the one
lava case but not in the other. If you think Lewis's theory
does account for the difference, explain how it does: making
sure to appeal specifically to his analysis of knowledge and
to say which of his Rules for properly ignoring possibilities
are relevant to this case. If you think Lewis's theory does
not account for the difference, defend your answer.
Please be as concise and clear as possible. Always provide
specific page references and bibliographic information for work
you discuss. (When you attribute a view to an author, you must
cite the work and page number of the passage on which your
attribution is based. All quotes must be provided with page
references.)