If one accepts testimony among the instruments of knowledge, then one is forced to reconsider one's idea of the role of credit within knowledge. In fact, in the virtue-epistemology understanding of knowledge, this can be "credited" to the knower. However, in the case of testimony, the credit seems to be little in the case of the listener and to rather regard the speaker ---who is not the "knower" of a testimonial belief.
Is there any possible way out?
This debate lies at the center of Jennifer Lackey's Knowledge and Credit (2009, available through Jstor at this link), and of a broader discussion possibly initiated by Lackey 2007. Lackey 2009 discusses the case of a tourist (called Morris) coming in Chicago and asking for directions. He happens to ask a Chiacago resident who gives him exact directions. Morris now knows where the Sears Towers are, although he deserves no credit for that!
—If one says that Morris does not know where the Sears Towers are, then one has to leave out of "knowledge" most cases of testimony.
—By contrast, one might try to say that Morris does deserve some credit (for instance, insofar as he asked a sober adult, instead of a child, an intoxicated person, etc.). However, Lackey explains, if this is the case, then credit should be granted also to "knowers" in Gettier-cases,
e.g., to Jack who has reasons to believe that his colleague John has 10 coins in his pocket and will get an advancement and as a consequence truly believes that someone in the room has 10 coins in his pocket and will get an advancement, although the one who has 10 coins and will get an advancement is Jack himself and not his colleague (you can find enough literature on Edmund Gettier, but since his article is only 3 pages long, the best way is just to read it, here),
although the Credit View of Knowledge should exactly aim at distinguishing knowledge (justified true belief) from beliefs which are only accidentally true (i.e., Gettier-cases).
Lackey shows how all attempts to reconfigure the role of Credit to meet the Chicago Visitor case are deemed to fail (or to include Gettier-like cases). Among these attempts are the idea (see E. Sosa 2007) that Credit can be shared (for instance, by speaker and hearer).
Unfortunately, Lackey does not spell out in her 2009 article the consequences of the dismissal of the Credit view of knowledge. Will this lead to a new paradigm (where true beliefs are knowledge, no matter whether they are justified or not)? Or will it just force epistemologists to find a new way to distinguish between knowledge and accidentally true beliefs?
The discussion has some special impact for scholars focusing chiefly on Indian philosophy and for readers of this blog in particular. One notices 1) the role of the listener within testimony, already highlighted on this blog (see below), 2) the conundrum implied in the case of testimony: Either one accepts only "safe" cases of testimony (notably the Veda, in the case of Prābhākara Mīmāṃsā), or the acceptance of testimony risks to lead to the acceptance of Gettier-like cases as well, 3) the similarity between virtue-epistemology and parataḥ prāmāṇya in placing the additional element of knowledge over true belief on the knower (and not on the piece of knowledge itself). Last, you might remember the articles by Sibajiban Bhattacharya arguing that in India (which meant, for him, Navya Nyāya) there is no need for a true belief to be also justified to count as knowledge. Gettier-like cases are also discussed and accepted as knowledge.
Does the Indian approach just deny the importance of the listener's competence? Does the burden only rely on the source of Linguistic Communication? And, more in general, do we need credit?
Further discussions on similar contacts between testimony and Gettier cases can be found in the Stanford Encyclopedia of Philosophy, here. On the role of the listener, see here and here.
Is there any possible way out?
This debate lies at the center of Jennifer Lackey's Knowledge and Credit (2009, available through Jstor at this link), and of a broader discussion possibly initiated by Lackey 2007. Lackey 2009 discusses the case of a tourist (called Morris) coming in Chicago and asking for directions. He happens to ask a Chiacago resident who gives him exact directions. Morris now knows where the Sears Towers are, although he deserves no credit for that!
—If one says that Morris does not know where the Sears Towers are, then one has to leave out of "knowledge" most cases of testimony.
—By contrast, one might try to say that Morris does deserve some credit (for instance, insofar as he asked a sober adult, instead of a child, an intoxicated person, etc.). However, Lackey explains, if this is the case, then credit should be granted also to "knowers" in Gettier-cases,
e.g., to Jack who has reasons to believe that his colleague John has 10 coins in his pocket and will get an advancement and as a consequence truly believes that someone in the room has 10 coins in his pocket and will get an advancement, although the one who has 10 coins and will get an advancement is Jack himself and not his colleague (you can find enough literature on Edmund Gettier, but since his article is only 3 pages long, the best way is just to read it, here),
although the Credit View of Knowledge should exactly aim at distinguishing knowledge (justified true belief) from beliefs which are only accidentally true (i.e., Gettier-cases).
Lackey shows how all attempts to reconfigure the role of Credit to meet the Chicago Visitor case are deemed to fail (or to include Gettier-like cases). Among these attempts are the idea (see E. Sosa 2007) that Credit can be shared (for instance, by speaker and hearer).
Unfortunately, Lackey does not spell out in her 2009 article the consequences of the dismissal of the Credit view of knowledge. Will this lead to a new paradigm (where true beliefs are knowledge, no matter whether they are justified or not)? Or will it just force epistemologists to find a new way to distinguish between knowledge and accidentally true beliefs?
The discussion has some special impact for scholars focusing chiefly on Indian philosophy and for readers of this blog in particular. One notices 1) the role of the listener within testimony, already highlighted on this blog (see below), 2) the conundrum implied in the case of testimony: Either one accepts only "safe" cases of testimony (notably the Veda, in the case of Prābhākara Mīmāṃsā), or the acceptance of testimony risks to lead to the acceptance of Gettier-like cases as well, 3) the similarity between virtue-epistemology and parataḥ prāmāṇya in placing the additional element of knowledge over true belief on the knower (and not on the piece of knowledge itself). Last, you might remember the articles by Sibajiban Bhattacharya arguing that in India (which meant, for him, Navya Nyāya) there is no need for a true belief to be also justified to count as knowledge. Gettier-like cases are also discussed and accepted as knowledge.
Does the Indian approach just deny the importance of the listener's competence? Does the burden only rely on the source of Linguistic Communication? And, more in general, do we need credit?
Further discussions on similar contacts between testimony and Gettier cases can be found in the Stanford Encyclopedia of Philosophy, here. On the role of the listener, see here and here.