A class of problems is called decidable if there is an algorithm which will give the answer to any problem of the class after a finite length of time. The purpose of this paper is to discuss the classes of problems that can be solved by infinitely long decision procedures in the following sense: An algorithm is given which, for any problem of the class, generates an infinitely long sequence of guesses. The problem will be said to be solved in (...) the limit if, after some finite point in the sequence, all the guesses are correct and the same. Functions, sets, and functionals which are decidable by such infinite algorithms will be calledlimiting recursive. These, together with classes of objects which can beidentified in the limit, are the subjects of this report.Without qualification,setwill mean set of numbers;functionwill mean number-theoretic function of 1 variable, possibly partial;functionalswill take numerical values and have any number of numerical and/or function variables, the latter ranging solely over total functions of 1 variable. Thus a function is a special case of a functional,xwill invariably stand for a numerical variable;φfor a function variable;gfor a guess ;nfor the numerical variable which indexes the guesses, referred to as thetime. (shrink)

Beginning with a critical examination of the humanist assumptions of critical ethnography, this article interrogates and surfaces problems with the ontological and epistemological orientations of this research methodology. In drawing on exemplar empirical data from an arts‐based project, the article demonstrates the limitations in the humanist‐based qualitative research approach and advances a postdualist, postrepresentationalist direction for critical ethnography called entangled ethnography. Using data from a larger study that examined the perspectives of racialized mad artists, what is demonstrated in this inquiry (...) is that the entanglement of bodies, objects, and meaning‐making practices is central to working with the ontologically excluded, such as those who find themselves in various states of disembodiment and/or corporeal and psychic distribution. We propose the redevelopment of critical ethnography, extended by entanglement theory (a critical posthuman theory), and suggest that for it to be an inclusive methodology, critical ethnography must be conceptualized as in the process of becoming and always in regeneration, open to critique, extension, and redevelopment. (shrink)

Two experiments demonstrated letter-context effects that cannot easily be accounted for by postperceptual theories based on structural redundancy, iigural goodness, or memory advantage. In Experiment 1, subjects identified the color of a letter fragment more accurately in letter than in nonletter contexts. In Experiment 2, subjects identified the feature presented in a precued color more accurately in letters than in nonletters. We argue that these effects result from topdown perceptual processing.

Much international debate over access to medicines focuses on whether patent law accords with international human rights law. This article argues that this is the wrong question to ask. Following an analysis of both patent and human rights law, this article suggests that the better approach is to focus on national debates over the best calibration of patent law to achieve national objectives.

Patents and free trade make strange bedfellows. For most of their history, patents have been instruments deployed to resist trade with other countries, not to enhance it. Whether one looks at Venetian laws that punished citizens who practiced local crafts outside the city, the Mercantilist uses to which patents were put in Elizabethan England, or the cartels of the 19th and 20th centuries created on a foundation of interlocking patent rights, patents have had a distinctly protectionist function. It is thus (...) ironic that it is intellectual property rights in general, and patents in particular, that have been held up in recent years as the poster child of much that is wrong with globalization and free trade. Nowhere is this more so than in debates concerning international human rights law and patents, in particular the position that patents violate an international right to health. (shrink)