Reid and Condillac on Sensation and Perception: A Thought Experiment on Sensory Deprivation

In order to illustrate the difference between sensation and perception, Reid imagines a blind man that by ‘some strange distemper’ has lost all his notions of external objects, but has retained the power of sensation and reasoning. Reid argues that since sensations do not resemble external objects, the blind man could not possibly infer from them any notion of primary qualities. Condillac proposed a similar thought experiment in the Treatise on Sensations. I argue that Condillac can reach a conclusion opposite to that of Reid only by assuming that some particular collections of sensations do indeed resemble the qualities of external objects. Reid had considered a similar case in a manuscript, but he again notices that such complex collections sensations do not resemble the qualities of external objects

Investigating distance effects on environmental values: a choice modelling approach

Analysis of the relationship between distance and willingness to pay (WTP) is important for estimation and transfer of environmental benefits. Several contingent valuation (CV) studies have investigated this topic, but results are mixed. This paper describes a choice modelling (CM) application that estimates distance effects on parameters of three environmental attributes. Combinations of these attributes create different management policies for native vegetation. The CM study is based on a sampling procedure that provides a geographically balanced sample and statistical tests to choose the best specification of the distance–WTP relationship. Welfare analysis shows that disregarding distance causes under-estimation of individual and aggregated benefits and losses, seriously misdirecting resource allocation.choice modelling, geographical distance, spatial heterogeneity, stratified sample, Environmental Economics and Policy, Resource /Energy Economics and Policy,

Pelle sub agnina latitat mens saepe lupina. Copyright in the marketplace

This paper focus on the relationship between the right's aims of providing an incentive for creative activities, and the overall efficiency. It can in fact be shown that, even if the commodification of intellectual works by means of copyright does provide some incentive for creative activities, this benefit is offset by certain ‘side effects’ on the diversity and quality of the ideas produced, and interference with access to information and the incremental process of creation. All of which, if duly taken into account, can seriously call into question the overall balance of efficiency. In the present-day debate, the justifications given for copyright and author's rights invoke both considerations of economic efficiency, as well as ethics and rhetoric. However such arguments neglect to factor in the social costs, thus portraying in false light an institution that has, in practice, often served private interests very distant from its purported aims, injecting a significant amount of inefficiency into the economic system. This state of affairs can therefore be aptly summed up by the Latin adage of the title: "A wolf often lies concealed in the skin of a lamb". Nevertheless, the objections raised thus far, in the literature on the economic analysis of intellectual property rights, have inevitably resorted to the contra position of extra-economic values, such as equity and justice, against those of economic efficiency. In the present discussion we shall seek to reconcile these two sides, showing how, under an expanded analytical perspective with respect to costs and benefits, and taking into consideration additional elements, copyright proves to be fundamentally inefficient even from a strictly economic standpoint, and that this will only be aggravated by technological progress. We will therefore demonstrate that an examination of the dynamics of the right within the market and society can seriously call into question, or even entirely overturn, the traditional economic arguments in favour of copyright.

Copyright and endogenous market structure: a glimpse from the journal-publishing market

This article explores the journal publishing industry in order to shed light on the overall economic consequences of copyright in markets. Since the rationale for copyright is among others to promise some market power to the holder of the successful copyrighted item, it also provides incentives to preserve and extend market power. A regular trait of copyright industries is high concentration and the creation of large catalogues of copyrights in the hands of incumbents. This outcome can be observed as the aggregation of rights and is one of the pivotal strategies for obtaining or extending market power, consistently with findings in other cases. Journal publishing is no different in this respect from other copyright industries, and in the last decade has experienced a similar trajectory, leading to a highly concentrated industry in which a handful of large firms increasingly control a substantial part of the market. It also provides a clear example of the effect of copyright dynamics on market structure, suggesting that a different attitude should be taken in lawmaking and law enforcement.copyright and market power, endogenous market structure, journal-publishing industry

Choice Modelling and laboratory experiments for non-market valuation: a framework

This paper is about combining Choice Modelling and laboratory experimentsincentive-compatible, stated preferences,pivot process, WTP/WTA disparity

Property rights and externalities: The uneasy case of knowledge

Drawing from Coase's methodological lesson, this article discusses the specific case of knowledge, which was for a long time chiefly governed by exchange mechanisms lying outside the market, and has only recently been brought into the market. Its recent, heavy "colonization" by the property paradigm has progressively elicited criticism from commentators who, for various reasons, believe that the market can play only a limited role in pursuing efficiency in the knowledge domain. The article agrees with the enounced thesis and tries to provide an explanation of it that relates to the fact that in specific circumstances property-rights can produce distinct market failures that affect the social cost and can consequently prevent attainment of social welfare. In particular, the arguments set forth here concern three distinct externalities that arise when enforcing a property rights system over knowledge. First, the existence of a property right may itself alter individual preferences and social norms, thus causing specific changes in individuals' behaviour. Second, the idiosyncratic nature of knowledge, as a collective and inherently indivisible entity, means that its full propertization can be expected to produce significant harm. Third, property rights can cause endogenous drifts in the market structure arising from the exclusive power granted to the right holder: though generally intended as a necessary mechanism for extracting a price from the consumer, in the knowledge domain property rights can become a device for extracting rents from the market.property rights, knowledge, invention, externalities, efficiency

Modeling the evolution of natural cliffs subject to weathering. 2, Discrete element approach

The evolution of slopes subjected to weathering has been modeled by assuming Mohr-Coulomb behavior and by using a numerical approach based on the discrete element method (DEM). According to this method, soil and/or rock are represented by an assembly of bonded particles. Particle bonds are subject to progressive weakening, and so the material weathering and removal processes are modeled. Slope instability and material movement follow the decrease of material strength in space and time with the only assumption concerning the weathering distribution within the slope. First, the case of cliffs subject to strong erosion (weathering-limited conditions) and uniform weathering was studied to compare the results of the DEM approach with the limit analysis approach. Second, transport-limited slopes subject to nonuniform slope weathering were studied. Results have been compared with experimental data and other geomorphologic models from the literature (Fisher-Lehmann and Bakker–Le Heux). The flux of material from the slope is modeled assuming degradation both in space and time

Investigating distance effects on environmental values: A choice modelling approach

This paper describes a Choice Modelling experiment set up to investigate the relationship between distance and willingness to pay for environmental quality changes. The issue is important for the estimation and transfer of benefits. So far the problem has been analysed through the use of Contingent Valuation-type of experiments, producing mixed results. The Choice Modelling experiment allows testing distance effects on parameters of environmental attributes that imply different trade-offs between use and non-use values. The sampling procedure is designed to provide a Ògeographically balancedÓ sample. Several specifications of the distance covariate are compared and distance effects are shown to take complex shapes. Welfare analysis also shows that disregarding distance produces under-estimation of individual and aggregated benefits and losses, seriously hindering the reliability of costbenefit analyses.choice Modelling techniques, distance, aggregation, sampling, functional forms.

Access to vs. exclusion from knowledge: Intellectual property, efficiency and social justice.

The main rationale for intellectual property relies on the thesis of the incentive to create. Creators and inventors are economic agents attracted by the returns they expect from their effort. This depiction is practical, but does not give due weight to the complexity of knowledge production. This work does not contest the potential benefit of the opportunity for creators and inventors to reap some profit from their work. Rather, it considers the idiosyncratic nature of knowledge, which is simultaneously input, output and productive technology, and is closely linked to the social dimension. This provides further insight into the production process and suggests a significantly different framework for policy. More specifically, because of the increasing returns governing creative technology, the efficiency criterion used to guide the economic choice calls for weak intellectual property rights, thus preserving wide access to knowledge. A stronger appropriation regime would significantly impair the total outcome of the creative processes. Interestingly, this appears to apply equally from a social justice perspective, perhaps in an effortless solution to the age-old trade-off between economic efficiency and social justice.intellectual property rights, knowledge production, increasing returns, knowledge sharing, productivity, social justice