In 2014, Colonel M. Shane Riza published an article in this journal arguing that remotely piloted aircraft and robotic weapons threaten the US Air Force’s warrior ethos. Riza has clearly articulated the sentiments of one side of a vibrant debate within our service. This paper presents an alternative view; a view held by some who have experienced these new forms and tools of war, and who have wrestled with their implications first-hand. In this paper, we address some methodological concerns with (...) Riza’s approach and then engage some misunderstandings about RPA’s relationship to military history and to risk. The second part of this paper takes a close look at some of the early Just War thinkers to determine what implications the tradition may have on the warrior ethos. We propose, as an alternative to Riza’s position, a return to an ethos grounded in humility, charity, and a conception of war as a last resort; in short, a return to the Just Warrior Ethos. (shrink)

The following progress report views language acquisition as primarily the attempt to create processes that connect together in a fruitful way linguistic input and other activity. The representations made of linguistic input are thus those that are optimally effective in mediating such interconnections. An effective Language Acquisition Device should contain mechanisms specific to the task of creating the desired interconnection processes in the linguistic environment in which the language learner finds himself or herself. Analysis of this requirement gives clear indications (...) as to what these mechanisms may be. (shrink)

The past two decades have seen an explosion in the methods and directions of neuroscience research. Along with many others, complexity research has rapidly gained traction as both an independent research field and a valuable subdiscipline in computational neuroscience. In the past decade alone, several studies have suggested that psychiatric disorders affect the spatiotemporal complexity of both global and region-specific brain activity (Liu et al., 2013; Adhikari et al., 2017; Li et al., 2018). However, many of these studies have not (...) accounted for the distributed nature of cognition in either the global or regional complexity estimates, which may lead to erroneous interpretations of both global and region-specific entropy estimates. To alleviate this concern, we propose a novel method for estimating complexity. This method relies upon projecting dynamic functional connectivity into a low-dimensional space which captures the distributed nature of brain activity. Dimension-specific entropy may be estimated within this space, which in turn allows for a rapid estimate of global signal complexity. Testing this method on a recently acquired obsessive-compulsive disorder dataset reveals substantial increases in the complexity of both global and dimension-specific activity versus healthy controls, suggesting that obsessive-compulsive patients may experience increased disorder in cognition. To probe the potential causes of this alteration, we estimate subject-level effective connectivity via a Hopf oscillator-based model dynamic model, the results of which suggest that obsessive-compulsive patients may experience abnormally high connectivity across a broad network in the cortex. These findings are broadly in line with results from previous studies, suggesting that this method is both robust and sensitive to group-level complexity alterations. (shrink)

A Dedekind-finite set is said to be divisible by a natural number n if it can be partitioned into pieces of size n. We study several aspects of this notion, as well as the stronger notion of being partitionable into n pieces of equal size. Among our results are that the divisors of a Dedekind-finite set can consistently be any set of natural numbers, that a Dedekind-finite power of 2 cannot be divisible by 3, and that a Dedekind-finite set can (...) be congruent modulo 3, to all of 0, 1, and 2 simultaneously. (shrink)

Blair, David Review of: Here on earth: An argument for hope, by Tim Flannery, Text Publishing Co. 2010 $35.

Blair, David What's the best policy to deal with the catastrophe that looms due to global warming? Fundamentally, we must quickly change our sources of energy away from fossil fuels to non-carbon emitting sources - namely nuclear power and the various renewable sources. 'What's nuclear doing in there?' you may respond. 'Isn't the news about nuclear all bad?' But a growing chorus of scientists and thinkers is warning that, not only is nuclear power quite safe, but that to rule it (...) out poses a grave danger. I quote: Renewables like wind and solar and biomass will certainly play roles in a future energy economy, but those energy sources cannot scale up fast enough to deliver cheap and reliable power at the scale the global economy requires. While it may be theoretically possible to stabilise the climate without nuclear power, in the real world there is no credible path to climate stabilisation that does not include a substantial role for nuclear power. (shrink)

This paper derives a mathematical expression giving the development of the probability of a scientific hypothesis with the number of confirming tests, as determined by Bayes's theorem, in a special case in which all the tests are "independent" of one another. The simple expression obtained shows clearly how the various factors influence the growth of the probability. The result is used to set a numerical lower bound on the probabilities representing the a priori beliefs of humans in generalizations that become (...) accepted. By making a comparison with the predictions of a "logical atomic" model in the case of physical laws, it is argued that humans have significant a priori "knowledge" in a weak sense. (shrink)

Blair, David Review of: Incognito: The secret lives of the brain, by David Eagleman, Text Publishing, Melbourne, 2011, paperback, $35.

Blair, David Review(s) of: Incognito: The secret lives of the brain, by David Eagleman, Text Publishing, Melbourne, 2011, paperback, $35.

Blair, David Concerning David Tribe's rejoinder to my 'Science works better than that' , it's pleasing to see that there are some points on which we agree. Unfortunately he continues to make a strong and unjustified attack on the scientific community as a whole-essentially on the grounds that, of the conclusions of science that later turned out to be false, virtually all of them were at some time 'believed' by most scientists. In reply, I shall show that it is his (...) underlying framework that needs to be altered-quite radically. He does not understand what the activity of scientists is like-indeed what it has to be like, when faced with the task of extracting knowledge from the real world. (shrink)

Blair, David David Tribe, in his article, 'On science, good, bad and ugly' (AH, No. 107, Spring 2012), criticises an earlier article by Victor Bien. Bien - rightly in my view - defends present-day science in respect of three areas where science is under attack; the most prominent of these three is anthropogenic global warming (AGW). Tribe claims that, Victor Bien appears to have inflated views on the sagacity, objectivity and probity of scientists, who can be called our new priests. (...) Much as I respected David Tribe for his work in philosophy, I must criticize much of what he says about science in his article. (shrink)