Bancos, bibliotecas y cementerios: usos de las analogías en el razonamiento sobre biotecnología.

Analogies are frequently used in bioethics. As they are particularly effective as rhetorical tools, it is essential to determine under which conditions they can be said to be a legitimate discursive resource. In this paper we distinguish between nondiscursive uses and discursive uses of analogies and, within the latter, between explanatory uses and argumentative uses. Taking this classification as a basis, we provide different sets of criteria for determining whether or not a particular analogy constitutes a legitimate discursive resource. In distinguishing between legitimate and illegitimate analogies, we briefly illustrate our classification by some examples from recent literature on biobanks. [ABSTRACT FROM AUTHOR]